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Web3 & DApp Development Fundamentals · Lesson

What is Web3?

Understand the evolution of the internet from Web1 to Web3, focusing on decentralization, ownership, and new internet paradigms.

What is Web3? is a free Web3 & DApp Development Fundamentals lesson on CoddyKit. This is lesson 1 of 3. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Web3 & DApp Development Fundamentals learning path, and your progress syncs across the web and the CoddyKit app. The Web3 & DApp Development Fundamentals course includes 3 lessons in total.

Welcome to Web3

What if the internet were owned by its users? Web3 promises exactly that — more control and ownership over your digital life. Let's explore the shift.

The Early Internet: Web1

Web1 (roughly 1990-2004) was the read-only web: mostly static pages, users consuming information, and little interaction beyond clicking links.

The Interactive Web: Web2

Web2, from around 2004, is the social web we use now: user-generated content on centralized platforms like YouTube and Twitter, with apps front and center.

Web2's Centralization Challenge

Web2's centralization brought problems: companies own and profit from your data, platforms can censor content, and a few giants control access.

Enter Web3: The Vision

Web3 is the next step, tackling Web2's flaws with decentralization, user ownership, and transparency — built on blockchain for a more open web.

Core Idea: Decentralization

Decentralization spreads control across a network instead of one company: no single point of failure, community governance, and far less censorship.

True User Ownership

Web3 gives you true ownership: you directly hold your crypto and NFTs, decide who touches your data, and control your own digital identity.

Trustless & Transparent Systems

Web3 systems aim to be trustless and transparent — trust lives in the code and network rules, and transactions are publicly visible on a blockchain.

New Internet Paradigms

Web3 brings new building blocks: DApps running on a blockchain, the metaverse with digital economies, and DAOs governed by code instead of hierarchy.

Quick Check: Web Evolution

Which of the following are key characteristics of Web3, distinguishing it from Web2?

Web3: A New Digital Era

You traced the web from Web1's static pages to Web2's centralized platforms to Web3's decentralized, user-owned vision. Next, the tech behind it.

Frequently Asked Questions

Is the “What is Web3?” lesson free?

Yes — the full text of “What is Web3?” is free to read here on the web. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Web3 & DApp Development Fundamentals course, upgrade to CoddyKit PRO. The Web3 & DApp Development Fundamentals course includes 3 lessons in total.

What will I learn in “What is Web3?”?

Understand the evolution of the internet from Web1 to Web3, focusing on decentralization, ownership, and new internet paradigms. You practise Web3 & DApp Development Fundamentals with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.

Do I need any experience to start Web3 & DApp Development Fundamentals?

No prior experience is required. Web3 & DApp Development Fundamentals on CoddyKit is structured for beginners through advanced learners, so you can start here or from the beginning and move at your own pace. This is lesson 1 of 3.

How long does the “What is Web3?” lesson take?

Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.

Can I write and run code in this Web3 & DApp Development Fundamentals lesson?

Yes. Every Web3 & DApp Development Fundamentals lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.

All lessons in this course

  1. What is Web3?
  2. Blockchain Core Concepts
  3. Decentralization & Consensus
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