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Learn Bitcoin: The Original Cryptocurrency

Bitcoin introduced the world to blockchain — a fixed-supply digital money secured by Proof of Work. Learn how it works, why mining matters, and how to hold keys safely with free courses, journals, and a masterclass.

Learn the fundamentals

Bitcoin is where it all started — and the best way to understand it is through the fundamentals it invented.

Crypto Fundamentals masterclass
A 10-lesson path covering keys, wallets, transactions, tokens, and staying safe — with Bitcoin as the running example. First two lessons free.
Basic Concepts course
Blockchain fundamentals: distributed ledgers, consensus, and how Bitcoin’s design works.
Web3 Fundamentals course
The ecosystem Bitcoin launched — wallets, dApps, and Web3 — free for members.

Journals: Bitcoin and the tech behind it

Longer reads on the ideas Bitcoin introduced and the ecosystem it spawned.

Learn About Blockchain
The distributed ledger Bitcoin invented — how blocks, mining, and consensus fit together.
Crypto Wallet Security: Seed Phrases & Passkeys
Keys, seed phrases, and hardware wallets — how to hold BTC safely.
What Is a Stablecoin?
Why Bitcoin’s volatility created demand for dollar-pegged tokens.
What Is DeFi?
The financial ecosystem that grew from Bitcoin’s invention.

Glossary: Bitcoin vocabulary

Every key term, each with its own page.

Frequently asked questions

What is Bitcoin in simple terms?
Bitcoin is digital money secured by a public blockchain instead of a bank. It has a fixed supply of 21 million coins, is maintained by thousands of independent computers, and lets anyone send value globally without permission.
What is Bitcoin mining?
Mining is how new blocks are added and coins issued. Miners race to solve a computational puzzle (Proof of Work); the winner adds the next block of transactions and earns the block reward. The energy spent makes the ledger expensive to attack.
What is the difference between Bitcoin and Ethereum?
Bitcoin is designed as money — a scarce store of value with a simple, conservative protocol. Ethereum is a programmable platform for smart contracts and apps. Bitcoin optimizes for security and simplicity; Ethereum for flexibility.
Can I learn about Bitcoin without buying it?
Yes — completely. Our free courses, masterclass lessons, and articles explain how Bitcoin works, and testnet environments let you experiment without spending anything.