Structured education across every format and skill level · 20 guides
Proof of work explained simply: how Bitcoin miners spend electricity to agree on one shared history, and why that makes rewriting the past so expensive.
A testnet is a practice copy of a blockchain where coins are free and worthless. What testnets are for, how to use one, and why testnet coins are never sold.
A mainnet is the live version of a blockchain, where coins have real value and transactions are permanent. What mainnet means and what a mainnet launch is.
Open source in crypto means the code is published for anyone to read and check. Why Bitcoin and Ethereum work that way, and why open does not mean safe.
A node is a computer that keeps its own copy of a blockchain and checks every transaction. What nodes do, why the copies matter, and how to run one.
Ethereum explained simply: the blockchain that runs programs, what ether and gas are, and why apps like Uniswap and Aave are built on it.
A dApp is an app whose back end is a smart contract instead of a company server. How you connect a wallet, real examples, and what to watch for.
A smart contract is a small program on a blockchain that runs by itself. How it works, where Uniswap and Aave use one, and what can go wrong.
