Cryptocurrency is digital money that runs on blockchain technology, allowing people to send, receive, and store value without banks or intermediaries.

The first and most widely used cryptocurrency, often called “digital gold.”
👉 Bitcoin is designed as a store of value with a fixed supply of 21 million coins.
👉 It operates on a decentralized network, meaning no government or bank controls it.

A programmable blockchain that allows developers to build smart contracts and decentralized applications.
👉 Ethereum powers DeFi, NFTs, and most Web3 applications.

Cryptocurrencies designed to maintain a stable value by being pegged to real-world assets like the U.S. dollar.
👉 Commonly used for trading, payments, and protecting against volatility.

Highly speculative cryptocurrencies driven by hype, trends, and community engagement rather than strong fundamentals.
👉 Can rise quickly in price but carry significant risk.

A coin operates on its own blockchain (Bitcoin, Ethereum).
A token is built on top of an existing blockchain (Ethereum-based tokens).
👉 Coins = native assets
👉 Tokens = built on platforms using smart contracts

A decentralized digital ledger that records transactions across multiple computers.
👉 Transactions are secure, transparent, and immutable (cannot be altered once confirmed).

The base networks that validate transactions and secure the blockchain.
👉 Examples: Bitcoin, Ethereum, Solana.

Scaling solutions built on top of Layer 1 to improve speed and reduce fees.
👉 They process transactions more efficiently while relying on Layer 1 security.

Systems that connect blockchains to real-world data.
👉 Enable smart contracts to use external information like prices or events.

Computers that maintain and verify blockchain data.
👉 Nodes enforce the rules of the network and ensure decentralization.

A process where computers compete to solve complex problems to validate transactions.
👉 Secures the network and adds new blocks (used by Bitcoin).

Locking cryptocurrency to help validate transactions and secure the network.
👉 Participants earn rewards for supporting the system.

The method a blockchain uses to agree on valid transactions.
👉 Ensures all nodes trust the same data without a central authority.
👉 Examples: Proof of Work, Proof of Stake.

Platforms where users buy, sell, and trade crypto through a company.
👉 Easy to use but they control your funds.

Platforms that allow users to trade directly from their wallets using smart contracts.
👉 No middleman, full user control.

A blockchain-based financial system that removes banks and intermediaries.
👉 Users can lend, borrow, trade, and earn interest directly.

Applications that run on blockchain networks instead of centralized servers.
👉 Powered by smart contracts and user-controlled data.

The next evolution of the internet focused on decentralization and ownership.
👉 Users control their data, identity, and assets through wallets instead of logins.

Self-executing programs on a blockchain that run automatically when conditions are met.
👉 Replace intermediaries with code.

Tools that allow you to access, send, and manage your cryptocurrency.
👉 They store your private keys, not the crypto itself.

Wallets connected to the internet.
👉 Convenient for transactions but more vulnerable to attacks.

Wallets that are offline and not connected to the internet.
👉 Much safer for long-term storage.

Physical devices that store private keys completely offline.
👉 Protect against online hacks and unauthorized access.

A secret cryptographic key that gives full control over your crypto.
👉 If someone has your private key, they control your funds.

A 12 or 24-word backup used to restore your wallet.
👉 This is the master key to your crypto.
👉 Never share it. Never store it digitally.

A wallet address used to receive cryptocurrency.
👉 Safe to share publicly.
👉 Think of it like an email address for crypto.

• Custodial: A platform controls your private keys 
• Non-Custodial: You control your keys
  👉 “Not your keys, not your crypto” 

Fees paid to process transactions on a blockchain.
👉 Fees increase when network demand is high.
👉 Users often pay more to prioritize faster transactions.

A unique identifier that tracks a transaction on the blockchain.
👉 Acts as a digital receipt that proves the transaction occurred.

When too many transactions are processed at the same time.
👉 Leads to slower speeds and higher fees.

The total value of a cryptocurrency.
👉 Calculated as price × circulating supply.
👉 Used to measure the size and importance of a project.

How easily a cryptocurrency can be bought or sold without affecting its price.
👉 High liquidity = smoother, faster trades.

The rate at which the price of crypto increases or decreases.
👉 Crypto markets are highly volatile compared to traditional assets.

A period where prices are rising and investor confidence is strong.

A period where prices are falling and market sentiment is negative.

Investing a fixed amount of money at regular intervals regardless of price.
👉 Reduces emotional decision-making and timing risk.

Holding crypto long-term instead of selling during short-term price movements.
👉 Focuses on long-term growth.

Buying into a rising market due to hype or fear of missing profits.
👉 Often leads to poor entry points.

A scam where developers abandon a project and take investor funds.
👉 Common in new or unverified projects.

Artificially inflating the price of an asset and selling at the peak.
👉 Leaves late investors with losses.

Unique digital assets stored on a blockchain that represent ownership.
👉 Used in art, gaming, and collectibles.

The unique address of a token or smart contract on a blockchain.
👉 Always verify contract addresses to avoid fake or scam tokens.

A detailed document that explains a crypto project’s purpose, technology, and goals.
👉 Used to evaluate legitimacy and long-term potential.

Start simple.
👉 Learn the basics
👉 Focus on security first
👉 Avoid scams

Then build your knowledge step-by-step.