Two of the best technical books on Bitcoin and Ethereum can be read in full, for free, in a web browser. Meanwhile a blockchain certification sold online for $399 comes from a private company that names no independent body checking its exam. That contrast sums up the market for blockchain learning in October 2026: the strongest material is free and written by people who build the networks, and most paid certificates prove that you finished a course, not that you can do the job.
If you have just written your first contract in our hands-on Solidity lesson, the next questions are practical. What should I read next? Is any certificate worth paying for? Which newsletters and podcasts are still alive? Below, every resource carries its status as we checked it on 27 October 2026: active, the date of the last issue or episode, or ended.
A simple method keeps the list short. Take one primary source per network (its official documentation), one book per chain, one weekly newsletter and one podcast. Pay for a certificate only when a named employer, client or funder asks for it.
How we judged each resource
Five checks, applied to everything below. Does the author build or maintain the thing being taught? Was the material updated recently, and does it show a date? Can you read it before paying? Does it teach how the system works rather than how to trade it? And does anyone independent stand behind a credential, or only the company that sells it? A course that promises income from trading fails the last two checks at once.
Start with the official sources: ethereum.org and bitcoin.org
Both networks have a community-run home site. Neither sells anything, and both are translated, which matters for readers who want to study in French or Italian.
What ethereum.org gives a learner
The developers section of ethereum.org is the closest thing Ethereum has to a textbook. Its documentation runs from foundations (accounts, transactions, the Ethereum Virtual Machine, gas, nodes) through the developer stack (smart contracts, frameworks, client APIs, development environments, languages) to advanced topics such as bridges, MEV, oracles and scaling. It also hosts tutorials and a starter kit, Scaffold-ETH 2.
Its learning tools page listed 11 courses and exercises on 27 October 2026, among them Speedrun Ethereum, The Ethernaut, Damn Vulnerable DeFi, Solidity by Example, Trail of Bits’ Building Secure Contracts, Alchemy University and Cyfrin Updraft. CryptoZombies was not on that page that day, so do not take it as an ethereum.org recommendation.
The site says it is natively translated into more than 40 languages. We opened the French and Italian developer pages directly and found them in those languages. Its languages page also points to community groups: Ethereum France and BanklessFR on the French side, Ethereum Italia on the Italian side. It still links an Italian Ethereum podcast that stopped in 2022 (see the podcast section), a reminder that even official pages need a date check.
What bitcoin.org and developer.bitcoin.org offer
Bitcoin.org is simpler. It has getting-started pages for individuals, businesses and developers, a vocabulary page, a list of Bitcoin Improvement Proposals (BIPs), a page on running a full node and a copy of the white paper. It is available in 31 languages, French and Italian included, and its footer reads 2009-2026 under an MIT licence.
The developer link leads to developer.bitcoin.org: developer guides, an RPC API reference, examples and a glossary, in English only. Its footer shows copyright 2009-2020 and no Bitcoin Core version or last-updated date. That does not make it wrong, but read it next to the Bitcoin Core release notes before trusting any command or default.
Primary documents worth opening once
Three kinds of documents sit underneath everything else. The Bitcoin white paper of 2008 is nine pages long; our walk-through of the Bitcoin white paper reads it section by section. BIPs record how Bitcoin changes; Ethereum Improvement Proposals (EIPs) do the same for Ethereum, and token standards such as ERC-20 are EIPs. You will not read them for pleasure, but when a blog post and a specification disagree, the specification wins. For the plain-language basics, start with what Bitcoin is and how Ethereum works.
Two free books that stay useful: Mastering Bitcoin and Mastering Ethereum
Andreas M. Antonopoulos co-wrote both, both were published by O’Reilly, and both can be read legally without paying. That combination is rare in any technical field.
Mastering Bitcoin, third edition (2023)
The third edition of Mastering Bitcoin: Programming the Open Blockchain, by Antonopoulos and David A. Harding, had its first print in December 2023, according to the book’s official GitHub repository. The text is under a Creative Commons Attribution-ShareAlike 4.0 licence (CC BY-SA 4.0), and the repository’s BOOK.md file links every chapter so you can read it in the browser. People often search for a “Mastering Bitcoin PDF”: the repository is the legitimate free copy, and it is not a PDF.
Who is it for? Readers who can follow some code and want to know how keys, addresses, transactions, scripts, the peer-to-peer network, mining and consensus actually fit together. It assumes curiosity more than a computer science degree, though the chapters on scripts and signatures are dense. The repository lists translations of earlier editions by local publishers (German, Polish, Japanese, Korean, Chinese and others) and invites volunteers to translate via Transifex. It lists no French or Italian edition, so treat unofficial copies with care.
Mastering Ethereum, second edition (2025)
The first Mastering Ethereum, by Antonopoulos and Gavin Wood, was tagged as first print in the book’s repository in November 2018, before Ethereum moved to proof of stake. The second edition adds three authors, Carlo Parisi, Alessandro Mazza and Niccolò Pozzolini, on top of the original. O’Reilly’s catalogue dates the second edition to October 2025, the repository tagged its second-edition release on 26 November 2025, and the full text is free to read at masteringethereum.xyz.
The licence has a timer. According to the Mastering Ethereum repository, the book is under CC BY-NC-ND 4.0 for the first 12 months after publication and then moves to CC BY-SA 4.0, a scheme the README says O’Reilly approved. Counted from the October 2025 publication, the switch falls in late 2026; on 27 October 2026 the README still described the timed scheme and gave no switch date, and the repository has no separate licence file. Reading online is free either way; the licence only changes what you may copy and adapt.
The second edition has 17 chapters, from Ethereum basics, nodes and cryptography to tokens, oracles, wallet.">decentralised finance, the EVM, consensus, scaling and zero-knowledge proofs. If you just finished the Solidity lesson, chapters 7 (Smart Contracts and Solidity) and 9 (Smart Contract Security) are the natural next read; chapter 8 covers Vyper, the other EVM language. Our glossary entry on smart contracts gives the one-paragraph version.
What the two books do not do
Neither book tells you what to buy. There are no price predictions, no trading systems and no certificate at the end. That is a strength. A book that explains how a signature is checked is still correct after a crash; a book about which coin will rise is not.
Other books worth reading, and one free university textbook
A short list, chosen because each one does a different job. Dates and publishers come from the books’ own repositories, sites or publishers, checked on 27 October 2026.
| Book | Author(s) | Year, publisher | What it is for | Free to read? |
|---|---|---|---|---|
| Mastering Bitcoin (3rd ed.) | Antonopoulos, Harding | December 2023, O’Reilly | How Bitcoin works, with code | Yes, GitHub (CC BY-SA 4.0) |
| Mastering Ethereum (2nd ed.) | Antonopoulos, Wood, Parisi, Mazza, Pozzolini | 2025, O’Reilly | Ethereum, Solidity, security, DeFi | Yes, masteringethereum.xyz |
| Programming Bitcoin | Jimmy Song | 2019, O’Reilly | Build Bitcoin’s pieces in Python | Chapter sources on GitHub |
| Bitcoin and Cryptocurrency Technologies | Narayanan, Bonneau, Felten, Miller, Goldfeder | Princeton team; peer-reviewed published version | University-level foundations | Yes, free draft |
| The Bitcoin Standard | Saifedean Ammous | 2018, Wiley | An argument about money, not a manual | No |
Programming Bitcoin has you write elliptic curve maths, transactions and a light client in Python. Its GitHub repository holds the chapter files and exercises; the README says the book “will be licensed under CC-BY-NC-ND once the book is published”, so check the licence before reusing anything.
Bitcoin and Cryptocurrency Technologies, written at Princeton, is the most academic choice. The authors’ book site offers a free pre-publication draft, and the companion Coursera course is free. It predates most smart contract and DeFi work, so read it for foundations, not for current practice.
The Bitcoin Standard is a viewpoint book. Ammous makes an economic case for Bitcoin as hard money and against government-issued currency. Read it as an argument to test, not as a manual, with the habits in our guide to reading crypto news critically.
Books in French
French readers have more choice than Italians. A ranked list on Cryptoast (published 25 September 2026) runs from beginner to expert and includes Bitcoin & cryptomonnaies faciles by Claire Balva and Alexandre Stachtchenko (2022), L’Internet de l’argent (a translation of Antonopoulos), Le Dictionnaire de Bitcoin by Loïc Morel, L’élégance de Bitcoin by Ludovic Lars and L’étalon-bitcoin, the French translation of Ammous. One caveat: the list’s first entry is a book by Cryptoast’s own team, so the ranking is not neutral. The Ammous title is advocacy and Morel’s dictionary is reference work: read them for different reasons.
Books in Italian
We could not verify a solid beginner reading list in Italian from publishers’ catalogues, and we would rather say so than invent one. The best Italian material we found is free: the Italian pages of bitcoin.org and ethereum.org, and the Bitcoin Italia Podcast described below. The official Mastering Bitcoin repository lists no Italian edition, so any Italian copy you come across is not an official version of the current text.
Free courses: a reminder, and two additions
CryptoZombies, Speedrun Ethereum, Alchemy University and Cyfrin Updraft are reviewed one by one in our lesson on how to become a blockchain developer, with what each teaches and how current it is. Two resources are new here.
Chaincode Labs runs the BOSS Challenge, a free three-month programme for people who want to work on Bitcoin and Lightning infrastructure, in C++ or Rust. Applications for the 2026 edition closed on 31 December 2025 and it started the week of 12 January 2026; no 2027 cohort was announced on its page on 27 October 2026. Chaincode also lists self-paced seminars and an onboarding course to Bitcoin Core.
Princeton’s Bitcoin and Cryptocurrency Technologies course on Coursera, taught by Arvind Narayanan, is free and showed 867,757 enrolments on 27 October 2026. Its FAQ is blunt: “No certificates, credentials, or reports are awarded in connection with this course.” That is a useful test of motive. If you only want the paper, this is not your course; if you want the knowledge, it is one of the best.
Blockchain certification: what exists, what it costs, what employers make of it
No certificate is needed to write a smart contract, run a node or submit a finding to an audit contest. As our guide to blockchain jobs and salaries explains, crypto teams hire on public evidence: code on GitHub, contracts deployed on a testnet, audit-contest results, hackathon projects. We found no independent study showing that employers prefer candidates with a paid blockchain certification, and the claims we found that they do come from the people selling them.
No US or UK regulator licenses blockchain learners either. A blockchain certification is not an SEC or FCA registration, and it does not let you give investment advice. What follows is what each credential is, who stands behind it and what it cost on 27 October 2026, in US dollars.
Vendor certificates: Blockchain Council and C4
The Blockchain Council’s Certified Blockchain Developer page showed a list price of $399 on 27 October 2026, under a Halloween discount banner, for about 15 hours of material in 17 modules and 68 lessons, with an online exam. It says the credential is “recognized by employers worldwide” and that more than 10,000 professionals are certified. It names no accrediting body, only a “Verified Issuer” label, and does not show the number of questions, the pass mark or the time limit. “Lifetime” refers to access to the course. We found no independent evidence for the employer-recognition claim.
The Cryptocurrency Certification Consortium (C4) describes its Certified Bitcoin Professional exam precisely: 75 multiple-choice and true-or-false questions over 33 topics, a 20-minute limit, 70% to pass, one retake included, six months to sit the exam after paying, and two years of validity before renewal with a current exam. Fees are non-refundable. The page showed no price and no employer-recognition claim. Nothing on the page says how many people still take the exam.
| Credential | Provider | Price (27 Oct 2026) | Format | Independent accreditation named |
|---|---|---|---|---|
| Certified Blockchain Developer | Blockchain Council (private company) | $399 list, promotion shown | 15 h course, online exam | None |
| Certified Bitcoin Professional | C4 | Not shown | 75 questions, 20 min, 70% pass, 2-year validity | None |
| Hyperledger Fabric Certified Practitioner (HFCP) | Linux Foundation | $250 | Exam | Linux Foundation (non-profit) |
| Besu Certified Professional (BCP) | Linux Foundation | $250 | Exam | Linux Foundation (non-profit) |
| Cyfrin Updraft courses | Cyfrin | Free courses | On-demand | Certificate terms not published |
Linux Foundation: the enterprise option
The Linux Foundation’s Decentralized Trust training page lists two blockchain certifications as of 27 October 2026: the Hyperledger Fabric Certified Practitioner (HFCP) and the Besu Certified Professional (BCP), $250 each. Its course LFS270 on Fabric costs $99, a bundle of LFS270 plus the HFCP exam $299, and a THRIVE training subscription bundled with either exam $495. The older Certified Hyperledger Fabric Administrator and Developer exams (CHFA, CHFD) are no longer listed, and the old CHFA page returned an error. These exams test permissioned enterprise chains, the kind banks and supply-chain consortia run. They carry the weight of a non-profit with a long certification record, but they say little about public-chain work on Ethereum or Solana.
Platform credentials: Cyfrin Updraft and Coursera
Cyfrin Updraft describes its on-demand courses as free to access, with more than 150 lesson hours and career tracks in blockchain basics, smart contract security, DeFi development and wallet security. It promises “industry-recognized credentials” in security and compliance without publishing their price, exam or requirements, so we cannot say what they certify. Coursera hosts many paid blockchain specialisations with certificates; the Princeton course above is the free one, without a certificate. In both cases the value is the skill and the code you produce, which an interviewer can check, not the badge.
University and executive programmes
Universities sell something different: time with faculty, a cohort and a recognised institution’s name. They are priced for employers paying for staff. In France, Université Paris Dauphine-PSL’s executive certificate in blockchain and decentralised finance, run with the Institut Louis Bachelier, lasts 54 hours over three months and costs €6,000 net. École Polytechnique Executive Education announced its Blockchain Advanced Program in DeFi on 17 April 2023: 12 days, for professionals with at least three years of experience, co-directed by professors Daniel Augot and Julien Prat; the announcement gave no price, and we found no 2026 dates or fee. In Italy, the Politecnico di Milano ran the fifth edition of its 40-hour Blockchain Bootcamp, directed by Francesco Bruschi, from 24 to 28 June 2024; we found no later edition, so check the university’s site for a new one.
France and Italy: registered titles and what to check
France has a public register that most countries lack. France Compétences records professional titles (RNCP) and certifications (RS), and only registered ones can be funded through a worker’s training account (CPF). Two blockchain developer titles were active on 27 October 2026: RNCP42188 “Développeur blockchain” from EFREI Paris (level 6, registered until 30 April 2029) and RNCP41719 from Université Paris-Saclay (level 6, until 27 October 2028). Both were registered in 2025 or 2026, so the titles are new. Before paying any school, French readers should find its number in the register and check the certifier and end date, and should ignore unsolicited calls about CPF money: the French government tells people to book training only through the official moncompteformation.gouv.fr site. A school that shows the CPF logo but cannot give a register number has not passed the check.
Italy has no equivalent single register for blockchain courses that we could verify. Italian readers should check that a course belongs to a university or a recognised training body, and be wary of any course sold together with trading promises. A university bootcamp such as the Politecnico di Milano one above publishes its director, hours and dates; a course that publishes only testimonials does not meet that bar.
When a certificate helps, and when it does not
A certificate can help in a few cases. A public funder or employer may require one to pay for training. A non-technical professional (a compliance officer, a lawyer, a bank project manager) may need a recognisable line on a CV to show the topic was studied. A company may want its Hyperledger staff tested by a neutral body. In those cases pick the credential the payer names, or a university or Linux Foundation exam over a private vendor.
It does not help a developer looking for a first crypto job. A $250 to $400 exam that one company writes, sells and marks tells a hiring manager less than one audited contract in a public repository. Spend the money on time: a month of focused building is worth more than any blockchain certification we reviewed.
Watch for the other end of the market too. In an alert of 7 August 2026, the US Federal Trade Commission warned about investment training sold on social media with promises of quick wealth, citing its case against IM Mastery Academy (IML), which it says lured young people with “educators” lacking real credentials. A course that sells a trading lifestyle is not blockchain education. Our guides on avoiding crypto scams and fake investment platforms list the warning signs.
Newsletters worth reading, with their last issue date
A newsletter is only useful if it is still being written. We checked each feed or archive on 27 October 2026.
| Newsletter | Covers | Last issue seen (27 Oct 2026) | Status | Cost, language |
|---|---|---|---|---|
| Bitcoin Optech | Bitcoin and Lightning development | #428, 23 October 2026 | Active, weekly | Free, English |
| The Defiant | DeFi and Ethereum news | 27 October 2026 | Active, daily items | English |
| Bankless | Ethereum, DeFi, markets | 26 October 2026 | Active | Free newsletter, English |
| Week in Ethereum News | Ethereum development | Ended 1 January 2025 | Discontinued | English |
| Criptovaluta.it (Substack) | Italian crypto news | 20 January 2026 | Not active | Italian |
For technical readers, Bitcoin Optech is the standout: a weekly digest of Bitcoin protocol and Lightning development, written for engineers and free of price talk. The Defiant and Bankless are news and opinion more than teaching. Bankless in particular is openly pro-Ethereum and leans towards markets, which is fine as long as you know it.
Week in Ethereum News is the cautionary tale. For years it was the place Ethereum developers caught up. The last regular issue was dated 28 December 2024, and its author Evan Van Ness announced the end on 1 January 2025, and The Block reported that he blamed the loss of Ethereum Foundation support and the lack of a business model. Many reading lists still recommend it. Check the date of the last issue before subscribing to anything.
In French, Journal du Coin and Cryptoast publish news every day (both had items dated 27 October 2026); they are news sites rather than learning newsletters. In Italian, The Cryptonomist is also a daily news site, and the Substack newsletter of Criptovaluta.it had not posted since 20 January 2026. For learning rather than headlines, readers of both languages are better served by the English technical newsletters above.
Podcasts in English, French and Italian that are still running
Release dates below come from each show’s feed or Apple Podcasts listing, read on 27 October 2026. Shows that have stopped are named as such, because search results keep recommending them.
In English
- Bankless: latest episode 26 October 2026, more than 1,350 episodes; Ethereum and DeFi, with a market slant.
- Unchained (Laura Shin): latest 24 October 2026; interviews and industry news across chains.
- What Bitcoin Did: latest 22 October 2026; Bitcoin interviews.
- Stephan Livera Podcast: latest 26 October 2026, episode 784; Bitcoin, often technical.
- Zero Knowledge: latest 21 October 2026; cryptography and zero-knowledge research, the most technical show here.
- Bitcoin Optech Podcast: latest 20 October 2026; a spoken companion to the newsletter.
- Epicenter: latest 9 September 2026, less frequent than it was.
- The Daily Gwei (Anthony Sassano): latest 22 May 2026, so no longer daily in practice.
For a beginner, the Optech podcast and Zero Knowledge teach the most per hour; Bankless and Unchained tell you what the industry is talking about.
In French
Cryptoast’s interview podcast was active: its feed showed episodes on 4 October, 10 October and 25 October 2026, the last one with Yorick de Mombynes on the monetary system. Cryptoast also runs “Actu Crypto”, a daily news feed read by a synthetic voice (835 episodes, the latest on 27 October 2026), useful for headlines but not an interview show. BFM Business’s BFM Crypto, a weekly market and regulation show, released its latest episode on 23 October 2026 (more than 600 episodes), and the separate BFM Crypto, les Pros feed last updated on 2 October 2026. We found no current podcast under the names “Le Ticker” or “Bitcoin Ultra” that some lists mention, so we leave them out.
In Italian
The Bitcoin Italia Podcast, hosted by Rikki and Guybrush, is the most reliable Italian show we found: weekly on Thursdays, with season 8 episode 38 released on 22 October 2026 and more than 400 episodes in total. Sicurezza Bitcoin Express, a short show on Bitcoin security, released its 27th episode on 27 October 2026. Bitcoin F.I.R.E. (Bitcoin e Libertà) is active, with 757 episodes and the latest on 13 October 2026, but its title promises an endless bull run based on a “power law”: treat it as opinion. The Ethereum Italia podcast stopped after its 25th episode on 10 November 2022, even though ethereum.org still links it.
A 90-day plan built from free resources
This plan assumes four to six hours a week and costs nothing. Adjust the pace, not the order.
- Weeks 1 to 4: read the foundational section of the ethereum.org documentation (accounts, transactions, EVM, gas) and one chapter of Mastering Ethereum a week, starting with chapters 1, 2, 6 and 7. Subscribe to one newsletter.
- Weeks 5 to 8: read Mastering Bitcoin’s chapters on keys, transactions and scripts, and open the Bitcoin white paper once. Pick one podcast and listen to one episode a week, taking notes on anything you cannot explain.
- Weeks 9 to 12: read Mastering Ethereum’s chapter 9 on security, solve the first levels of The Ethernaut, and put your notes and code in a public GitHub repository.
- End of week 12: list what you can now explain without looking. Gaps tell you which chapter to reread, which is more useful than any exam score.
The next lesson of this path turns that reading into practice: a first decentralised application, from contract to front end.
