NPTEL
FreeMastering Solidity, the Ethereum Programming Language
4.5(235)30k studentsALL LEVELSEnglish
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The course is split into a practical first part focused on best practices and a second part that goes deep into the Solidity language. The first part is designed to get you writing contracts quickly, without a long detour into language theory.
The second part is still being extended, so check which chapters are available before planning around the full syllabus. Some videos use a test network the author plans to replace, so expect small setup changes.
This course aims to give an overview of what you need to know to program in Solidity.
The course consists of two parts:
In the first part, I explain best practices about developing Solidity code, without explaining the Solidity language much. The idea of the first part is to get you quickly started programming Solidity code.
In the second part, I explain the Solidity language in depth.
The first part of the course is ready and consists of the chapters 2 - 6. I have recorded the videos for the Sepolia testnet. Before the Sepolia testnet is end-of-life in Q4 2026, I will record the videos again for the following Ethereum testnet.
In chapter 2, I explain some basic theory for people who do not know what a blockchain is.
In chapter 3 - 5, I explain tools that are used to develop blockchain applications:
These chapters explain the development tools Hardhat and Remix.
You will see Solidity code for making your own cryptocurrency.
You will see the JavaScript libraries ethers.js and web3.js that are used to interact with the Ethereum blockchain.
You will see how you can connect a wallet with a blockchain application. I will show MetaMask, which is a popular wallet and also WalletConnect, which acts as a bridge to connect multiple kinds of wallets with an application. I will also show how you can transfer cryptocurrencies in MetaMask.
You will see how to set up a local test blockchain on your computer and also how to interact with an Ethereum testnet on the Internet.
You will see how you can register and configure an Ethereum Name.
In chapter 6, I show how you can make a user interface that interacts with the Ethereum blockchain through the ethers.js library, it shows
how to retrieve the address of a smart contract through an Ethereum Name
how to read data from the blockchain through a default provider
how to connect MetaMask or a wallet through WalletConnect with the user interface
how to execute functions that write data to the blockchain through a connected wallet
how to search for events emitted by a smart contract
I am still working on the second part of the course that consists of all the chapters beginning from chapter 7. I will add more chapters over time. At the time of writing I have the following chapters online:
Chapter 7 that explains what the following chapters of this part will be.
Chapter 8 that explains the lexical elements of Solidity.
Chapter 9 that explains an SPDX license and pragma directives
Chapter 10 that explains the types in Solidity and how data is stored on the blockchain
Chapter 11 that explains functions in Solidity (except inheritance)
Chapter 12 that explains inheritance in Solidity
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Tracking since 15 Nov — not enough history yet to tell you whether today's price is any good. Watch the course and we'll tell you when it drops.
This is what we recorded in US pricing — not every price this course has ever had, and prices differ by country.
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