6 Best Web3 Courses Online (2026): dApps, Smart Contracts & DAOs

Last updated: 9 October 2026 (every course re-checked on its own page that day). Written by Josh Hutcheson, OnlineCourseing editor. See our review methodology.

Some links on this page are affiliate links: if you buy through them we may earn a commission at no extra cost to you. It never changes the ranking, and our top pick, Cyfrin Updraft, pays us nothing.

QUICK VERDICT

“Web3” is the umbrella term for applications built on blockchains instead of company-run servers: decentralized apps (dApps), smart contracts, wallets, DAOs, DeFi protocols and NFTs. A good web3 course teaches you to build those things, and the skill underneath almost all of it is Solidity, the main language for Ethereum smart contracts.

Courses in this field age quickly. Tooling has moved from Truffle and web3.js to Foundry, Hardhat and newer libraries, and several popular courses were last updated years ago. So we ranked these on how current they are, how much real building they involve, and whether they teach testing and security, which is what web3 teams check first.

Best Web3 Courses at a Glance

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How We Chose These Courses

We did not complete these courses for this page. On 9 October 2026 we opened each course’s own listing and checked that it is live and enrolling, when it was last updated, its length, instructors and price, and (on Udemy and Coursera) its rating and number of reviews. We favored courses that make you write, test and deploy code, that have been updated recently, and that cover security.

This refresh changed the list. We dropped “Solidity Smart Contracts: Build DApps in Ethereum Blockchain” on Udemy, which was last updated in June 2019, and moved Stephen Grider’s well-known Ethereum and Solidity course out of the top six: it is still live and popular, but it was last updated in April 2025 and is built on Web3 v1.0-era tooling. Cyfrin Updraft, which pays us nothing, is now our top pick because it is the best free developer curriculum.

The Best Web3 Courses, Reviewed

1. Cyfrin Updraft: best overall (free)

• Best for: Anyone who wants to build and secure smart contracts, from beginners to working developers
• Price: Free
• Courses: Blockchain Basics, Solidity Smart Contract Development, Foundry Fundamentals, Advanced Foundry, a Full-Stack Web3 Development crash course, Uniswap v4, and Python and Vyper
• From: Cyfrin, a smart-contract security and auditing firm
• Optional exam: SSCD+ certification, from $199.99

Updraft is the most complete free web3 curriculum available, and it is built by people who audit smart contracts for a living, which shows in how early it introduces testing and security. It runs as a sequence: start with Blockchain Basics (non-technical), move through Solidity and Foundry, then pick a specialization such as DeFi, security or full-stack web3. Much of the core Solidity track is taught by Patrick Collins, one of the best-known Solidity teachers.

The full-stack crash course is what makes it a web3 course rather than only a Solidity course: you connect wallets, call contracts from a front end and deploy a working decentralized app.

The catch: It is self-directed, with no instructor checking your work and no deadlines, so you need your own discipline. We have no affiliate relationship with Cyfrin.

Go to Cyfrin Updraft.

2. Web3 Masterclass: Blockchain, DApps, DAOs + More (Zero To Mastery): best web3 overview

• Best for: Beginners, product people and developers who want to understand web3 before choosing a path
• Length: 5 hours across 36+ lessons, last updated October 2026
• Instructor: Adam Odziemkowski
• Price: $99 on its own, or included in a ZTM membership (from about $25 a month)

This is the most explicitly “web3” course on the list, and it is a concepts course, not a coding course: how blockchains work, cryptocurrencies and wallets, smart contracts, decentralized apps, DAOs and NFTs, the history of the web, and the risks, including regulation and the long-term threat from quantum computing. ZTM says plainly that it is not there to sell you on web3, and the course takes a balanced line.

Take it first if you are deciding whether web3 is worth months of study, or if you work alongside web3 teams and need the vocabulary. If you already pay for ZTM, it is included.

The catch: You will not write or deploy a smart contract here. Developers should follow it with a hands-on course such as Updraft or ZTM’s bootcamp below.

See the ZTM Web3 Masterclass →

3. Solidity, Ethereum, and Blockchain: The Complete Developer’s Guide (Zero To Mastery): best paid developer course

• Best for: Developers who want a short, current, project-led course
• Length: 13 hours across 190 lessons, updated September 2026
• Instructor: Markus Waas, blockchain engineer
• Projects: an ERC-20 token, a stablecoin and a decentralized casino, tested with Foundry and Hardhat
• Price: $149 on its own, or included in a ZTM membership; 30-day money-back guarantee

ZTM’s bootcamp is the most up-to-date paid course here and the most efficient: Solidity, testing in both major frameworks, DeFi concepts and security, built around three portfolio projects. ZTM’s large Discord community helps when you get stuck. Paired with the Web3 Masterclass, it covers both the big picture and the core skill, and both are in the same membership.

The catch: It is short and assumes you are already comfortable programming, ideally in JavaScript.

See the ZTM Blockchain Bootcamp →

4. Ethereum Blockchain Developer Bootcamp With Solidity (Udemy): best budget Solidity course

• Best for: Budget learners who want a thorough, well-reviewed Solidity course with lifetime access
• Rating: 4.7 from 11,930 ratings, with more than 77,000 students
• Instructors: Ravinder Deol and Thomas Wiesner
• Updated: January 2025
• Price: Udemy list price, with frequent site-wide sales

The best-reviewed Solidity course on Udemy takes you from Solidity basics to building, testing and deploying smart contracts and decentralized apps on Ethereum. At Udemy sale prices it is the cheapest serious developer course on this list. For more Solidity-only options, see our best Solidity courses guide.

The catch: It was last updated in January 2025, so check its tooling against current releases and add Updraft’s security material.

5. Blockchain Specialization, University at Buffalo (Coursera): best university option

• Best for: Learners who want a guided path from concepts to smart contracts with a university certificate
• Structure: 4 courses, intermediate level
• Rating: 4.6 from 9,147 reviews (30 September 2026)
• Price: A Coursera subscription, or included in Coursera Plus; financial aid available

The Buffalo specialization explains how blockchains, consensus and cryptography work, then moves into smart contracts and decentralized app development on Ethereum. Its deadlines suit people who want structure, and a University at Buffalo certificate is the most recognizable credential here outside crypto-native companies.

The catch: Most Coursera courses now open in a one-module preview; the rest needs a subscription or financial aid. Some tooling in the programming courses is older than what web3 teams use, so pair it with Updraft for current practice.

See the Blockchain Specialization →

6. Introduction to Blockchain and Web3, Web3 Foundation (edX): best free non-technical start

• Best for: Beginners and business professionals who want the concepts before any code
• Length: 6 weeks at 2 to 3 hours a week, self-paced
• Price: Free to take; the verified certificate costs extra

The Web3 Foundation’s course covers the history of digital money, cryptography and hashing, wallets and block explorers, proof of work versus proof of stake, and the split between Layer 1 and Layer 2 networks. It is the lowest-risk way to find out whether web3 interests you before spending anything.

The catch: There is no coding, so it is a starting point rather than developer training.

Other Web3 Courses Worth Knowing

• Alchemy University (free, no affiliate): a free, in-browser alternative to Updraft with more JavaScript: Learn JavaScript (49 lessons), Introduction to Blockchain (43 lessons), an Ethereum Bootcamp (91 lessons) and a short Learn Solidity course.
• Web3 and Blockchain Fundamentals (INSEAD on Coursera): a 4-hour business course from Don and Alex Tapscott on what web3 means for companies: tokens, DAOs, the blockchain trilemma and when blockchain is the wrong tool. 4.6 from 115 reviews. Good for managers; no coding.
• Ethereum and Solidity: The Complete Developer’s Guide (Udemy): Stephen Grider’s course has 4.3 from more than 28,000 ratings and teaches clearly, including a React front end. It was last updated in April 2025 and uses older tooling, so treat it as a second course, not a first.
• Blockchain A-Z (Udemy): build a blockchain, a cryptocurrency and a smart contract from first principles to understand what is happening under the hood. 4.7 from more than 23,500 ratings, updated June 2026.
• Blockchain Council certifications: short self-paced courses with a vendor certificate ($199 to $399). Better for non-developers who want a credential than for aspiring web3 developers; see our Blockchain Council review.

What Is Web3, and Who Should Learn It?

Web3 refers to applications built on decentralized blockchain networks, where users hold their own assets and identity in a wallet rather than in an account controlled by a platform. Smart contracts, programs stored on a blockchain, replace much of the back end. Anyone can read and call them, which is why security matters so much: a bug in a deployed contract can be exploited by anyone.

Learning web3 makes sense if you are:

• A developer moving into smart contracts and dApps, ideally with JavaScript experience.
• A front-end engineer who wants to connect interfaces to on-chain logic with wallet and contract libraries.
• A security-minded developer interested in smart-contract auditing, one of the better-paid specialties.
• A product manager, analyst or founder who works with web3 teams and needs the concepts (start with the conceptual courses).

If you are mainly interested in investing in crypto rather than building, our best cryptocurrency courses guide is the better fit.

How to Learn Web3 Development: A Step-by-Step Path

The order you learn things in matters more than picking the single “best” course. A path that works:

1. Get the landscape (1 to 2 weeks). A conceptual course such as ZTM’s Web3 Masterclass, Updraft’s Blockchain Basics or the edX course, so the vocabulary makes sense.
2. Learn JavaScript if you do not know it (1 to 2 months). Most web3 front ends and much of the tooling are JavaScript or TypeScript. Alchemy University’s free JavaScript course is built for this step.
3. Learn Solidity and testing (2 to 3 months). Updraft’s Solidity and Foundry courses, or ZTM’s bootcamp. Write tests for everything.
4. Build and deploy a full dApp to a testnet. A contract plus a front end that connects a wallet, reads state and sends transactions.
5. Study security. Common vulnerabilities, then real audit reports. Security knowledge is what separates hireable developers from course graduates.
6. Pick a specialty. DeFi, NFTs and gaming, infrastructure, or auditing, and build two or three projects in it for a public portfolio.

For credentials that sit on top of this path, see our blockchain developer certification guide; for the underlying technology, our best blockchain courses guide.

What about DeFi (decentralized finance) courses?

DeFi, decentralized finance, is one of web3’s most practical tracks: lending protocols, decentralized exchanges and stablecoins built from smart contracts. You need solid Solidity first, then DeFi-specific study. Cyfrin Updraft has a DeFi track, including a course on Uniswap v4, and ZTM’s blockchain bootcamp builds a stablecoin as one of its three projects. Learn the general smart-contract material before specializing; DeFi code is where security mistakes cost the most.

Free Web3 Courses With a Certificate

This is one of the most common searches in the field, so it is worth being precise about what “free” and “certificate” mean on each platform:

• Cyfrin Updraft: courses free; an examined certification (SSCD+) is optional and paid.
• Alchemy University: courses free, with progress tracked on your account.
• edX (Web3 Foundation): course free to take; the verified certificate is paid.
• Coursera: usually a one-module preview, then a subscription or financial aid; the certificate comes with the paid access.

For a web3 job, a certificate matters much less than a public GitHub profile with tested, deployed contracts. Spend the money you save on a testnet project and a security course, not on a completion badge.

Frequently Asked Questions

What is the best web3 course?

For developers, Cyfrin Updraft: it is free and runs from blockchain basics through Solidity, Foundry testing and security, built by a smart-contract auditing firm. For a paid, project-led course, Zero To Mastery’s blockchain developer bootcamp. For a short conceptual overview before you commit, ZTM’s 5-hour Web3 Masterclass or the free Web3 Foundation course on edX.

Can I learn web3 for free?

Yes. Cyfrin Updraft and Alchemy University teach web3 development free from start to finish, and the Web3 Foundation’s introduction on edX is free to take (the verified certificate costs extra). Coursera has tightened free access: most courses now open in a preview of the first module only.

Are there free web3 courses with a certificate?

Cyfrin Updraft and Alchemy University are free and issue their own completion records, and Cyfrin offers an optional paid exam (SSCD+, from $199.99) if you want an examined credential. On edX and Coursera the course is free or included in a subscription, but the certificate is paid. Web3 employers care far more about deployed code than about any certificate.

Do I need to know how to code to learn web3?

For developer courses, yes: JavaScript is the best preparation, because Solidity’s syntax is similar and most web3 front-end tooling is JavaScript. For conceptual courses such as ZTM’s Web3 Masterclass, the INSEAD course on Coursera or the Web3 Foundation course on edX, no coding is needed.

How long does it take to learn web3 development?

A conceptual overview takes a weekend to a few weeks: ZTM’s masterclass is 5 hours and the edX course is six weeks at 2 to 3 hours a week. Becoming a junior smart-contract developer usually takes several months of steady practice, because you need Solidity, testing, security basics and a front end, plus a few deployed projects to show.

What’s the difference between web3, blockchain, and Solidity courses?

Web3 is the broad ecosystem of decentralized apps, wallets, DAOs, DeFi and NFTs. Blockchain courses cover the underlying technology. Solidity courses teach the main language for Ethereum smart contracts. A web3 developer needs all three, which is why the best web3 courses are really smart-contract courses with front-end and tooling added.

Is web3 development still worth learning in 2026?

It is a smaller and more cyclical job market than general web development, so learn it because you want to build on blockchains, not as a safe career default. Teams still hire smart-contract and security specialists, and the bar is real production skill, especially testing and security. Starting with free courses keeps the cost of finding out low.

Is a web3 certification worth it?

Rarely on its own. Web3 teams hire on public code, audit contest results and security knowledge. If you want a credential, choose one with a proctored exam, such as Cyfrin’s SSCD+, over a course completion certificate. Our blockchain developer certification guide compares the options.

More from our blockchain and crypto guides: Best Blockchain Courses · Best Solidity Courses · Blockchain Developer Certification · Blockchain Council Review · Best Cryptocurrency Courses · Udacity Blockchain Developer Review · Best Zero To Mastery Courses