Getting Started
Complete beginner basics for crypto newcomers
Plain English
Digital money that exists only online and uses encryption for security. Unlike regular money controlled by governments and banks, cryptocurrency operates on a decentralized network. Bitcoin was the first, and now there are thousands including Solana (SOL).
Technical
A digital asset designed to work as a medium of exchange using cryptographic functions to secure transactions, control the creation of additional units, and verify asset transfers. Built on blockchain technology, cryptocurrencies operate without central authority through distributed consensus mechanisms.
Plain English
The total value of all coins in circulation. Calculate it by multiplying the price of one coin by how many coins exist. If there are 1 million coins at $10 each, the market cap is $10 million. Higher market cap usually means more established and stable.
Technical
Total market value calculated as: Current Price × Circulating Supply. Represents aggregate valuation of a cryptocurrency and indicates relative size/stability in the market. Market cap ranking helps compare projects - though it doesn't account for locked tokens, treasury holdings, or actual liquidity depth.
Plain English
The number of coins currently available and actively being traded in the market. Not all coins are released at once - some are locked up or haven’t been created yet. Think of it like shares of a company that are actually available to buy and sell.
Technical
The amount of tokens publicly available and circulating in the market, excluding locked, vested, burned, or otherwise inaccessible tokens. Critical metric for calculating market cap. Differs from total supply (all minted tokens) and max supply (theoretical maximum that can ever exist).
Plain English
How much your trade affects the price. When you buy a lot of something, the price goes up. When you sell a lot, it goes down. Bigger trades = bigger impact. Like buying all the apples at a market - the seller raises the price because there's fewer left.
Technical
The change in asset price caused by executing a trade, particularly significant in AMM-based DEXs due to constant product formula (x*y=k). Larger trades relative to liquidity pool size cause exponential price impact. Calculated before execution to estimate actual execution price versus quoted price.
Plain English
A platform where you buy and sell cryptocurrency, like a stock market for crypto. Centralized exchanges (like Coinbase) hold your money for you. Decentralized exchanges (like Jupiter on Solana) let you trade directly from your wallet without a middleman.
Technical
Cryptocurrency trading platforms in two forms: CEXs (Centralized Exchanges) with custodial order book systems, and DEXs (Decentralized Exchanges) using AMMs or on-chain order books. DEXs enable non-custodial trading through smart contracts, eliminating counterparty risk but requiring users to manage gas fees and slippage.
Plain English
Your account number that you share with others to receive cryptocurrency. Like your email address or bank account number - it's safe to share publicly. It usually looks like a long string of random letters and numbers.
Technical
The public component of a cryptographic keypair, derived from the private key through elliptic curve cryptography. Serves as the address for receiving transactions and can be freely shared. On Solana, addresses are base58-encoded 32-byte public keys. The corresponding private key proves ownership and authorizes transactions.
Plain English
Your master password - a set of 12-24 random words that control your crypto. Like the key to a safe, anyone with these words has complete access to your money. Never share it, never type it on websites, and keep it written down somewhere very safe offline.
Technical
The secret component of a cryptographic keypair that authorizes transactions and proves ownership. Seed phrases (BIP39 mnemonic) encode the private key in 12-24 human-readable words, allowing deterministic wallet recovery. Cryptographically signs transactions without revealing the key itself. Loss means permanent asset forfeiture - there's no recovery mechanism.
Plain English
A small amount you pay for each transaction to cover the cost of processing it on the blockchain. On Solana, fees are extremely low (around $0.000005) compared to other blockchains like Ethereum which can charge $10-100 per transaction.
Technical
Fees paid to validators for including transactions in blocks and executing computational operations. On Solana, fees consist of: base fee (5000 lamports ≈ $0.000005 SOL per signature) plus compute unit pricing. Low fees result from high throughput and efficient architecture. Fees prevent spam and incentivize validators.
Plain English
A website that lets you look up any transaction, wallet, or block on the blockchain - like Google for blockchain data. For Solana, popular explorers are Solscan and Solana Explorer. You can paste a transaction ID or wallet address to see all details.
Technical
Web-based tools providing searchable interface for blockchain data: transactions, blocks, addresses, smart contracts, token transfers, and network statistics. Explorers parse raw blockchain data into human-readable format. Solana explorers (Solscan, SolanaFM, Solana Explorer) display transaction signatures, compute units, account changes, and program invocations.
Plain English
Mainnet is the "real" blockchain where actual money and transactions happen. Testnet is a practice version where developers can test things without risking real money - like a sandbox or demo mode. Test coins have no real value.
Technical
Mainnet is the production blockchain network where real economic value operates. Testnets (Devnet, Testnet) are separate networks with identical protocols but no economic value, used for development and testing. Solana maintains Devnet for developers and Testnet for validator testing before mainnet deployment. Faucets provide free tokens on test networks.
Plain English
Free cryptocurrency given to wallet addresses, usually as a marketing strategy or to reward early supporters. Like a company giving free samples. Sometimes new projects airdrop tokens to people who used their app early. Be careful - some fake airdrops are scams.
Technical
Distribution of tokens to wallet addresses, typically for community building, rewarding early adopters, or decentralizing token supply. Can be claimable (requires user action) or direct (sent automatically). Often retroactive based on on-chain activity criteria. Increasingly uses Merkle trees and claim mechanisms to prevent Sybil attacks and optimize distribution costs.
Plain English
How much and how quickly the price changes. Crypto is known for high volatility - prices can swing 10-50% in a single day. Traditional stocks might move 1-2% daily. This means bigger potential gains but also bigger potential losses.
Technical
Statistical measure of price dispersion over time, typically expressed as standard deviation or variance of returns. Crypto markets exhibit significantly higher volatility than traditional assets due to 24/7 trading, lower liquidity, regulatory uncertainty, and speculative dynamics. Volatility indices and implied volatility from options markets quantify expected price fluctuations.
Plain English
Your digital wallet for cryptocurrency, like a physical wallet but on your phone or computer. It stores your "keys" (passwords) that let you access and send your digital money. Think of it like your bank account app, but you control everything directly.
Technical
A software or hardware interface managing public-private keypairs for blockchain interaction. The public key serves as an address for receiving assets, while the private key (seed phrase) cryptographically signs transactions, proving ownership without revealing the key itself. Non-custodial wallets give users complete control over their keys.
Plain English
Cryptocurrencies designed to maintain a stable price, usually pegged to $1 USD. USDC and USDT are backed by real dollars in banks. DAI is algorithmic - maintained by smart contracts. Think of them as digital dollars - stable enough for payments and trading without wild price swings.
Technical
Cryptocurrencies engineered to minimize price volatility through various mechanisms: fiat-collateralized (USDC, USDT backed by USD reserves), crypto-collateralized (DAI backed by ETH/other crypto), and algorithmic (supply adjusts based on demand). Essential for DeFi as unit of account, medium of exchange, and store of value in volatile crypto markets.
Plain English
Custody means someone else (like Coinbase) holds your crypto for you, similar to a bank holding your money. Non-custodial means you control your own keys and crypto directly. Custody is easier but you trust the company. Non-custodial gives you full control but more responsibility.
Technical
Custodial services hold and manage private keys on behalf of users, providing convenience and support but introducing counterparty risk and loss of sovereignty. Non-custodial (self-custody) solutions give users direct control over private keys, enabling true ownership and eliminating third-party risk, but requiring users to manage security and recovery themselves.
Plain English
Traditional finance uses banks, credit cards, and financial institutions as middlemen for transactions. DeFi (Decentralized Finance) uses smart contracts instead of middlemen - you can lend, borrow, and trade directly with others through code, often with better rates and 24/7 access.
Technical
Traditional finance (TradFi) relies on centralized institutions (banks, exchanges, clearinghouses) for intermediation, custody, and settlement. DeFi eliminates intermediaries through programmable smart contracts, enabling permissionless access, transparent operations, composable protocols, and global liquidity. Trade-offs: DeFi offers innovation and accessibility but currently has higher technical complexity and smart contract risks.