Understand Bitcoin
& Cryptocurrency

Plain-English guides to blockchain, how crypto works, and how to get started safely — no jargon, no hype.

Start Learning Try the Calculator
// 01 — BASICS

What is Bitcoin?

Bitcoin (BTC) is a decentralized digital currency created in 2009 by the pseudonymous Satoshi Nakamoto. It allows peer-to-peer transactions without banks or governments — secured by mathematics and a global network of computers.

Decentralized

No single bank or government controls it. Thousands of computers worldwide keep it running.

Fixed Supply

Only 21 million BTC will ever exist. This built-in scarcity is why many call it "digital gold."

Transparent

Every transaction is recorded on a public ledger anyone can inspect — pseudonymous, not anonymous.

Borderless

Send value anywhere in the world in minutes — no wire fees, no bank hours, no frozen accounts.

Ready to try the calculator?

Convert any amount between Bitcoin, Ethereum, and USD instantly.

Open Calculator →
// 02 — TECHNOLOGY

How Blockchain Works

A blockchain is a chain of data blocks, each cryptographically linked to the one before it. Changing any block would break the entire chain — making it tamper-proof.

↑ Each block contains the hash of the previous block — altering one invalidates everything after it.

01

A transaction is broadcast

When you send Bitcoin, the transaction is signed with your private key and broadcast to thousands of nodes worldwide.

02

Nodes validate it

Network nodes check that you have sufficient funds and that your signature is valid. Invalid transactions are rejected immediately.

03

Miners compete to add it

Miners bundle valid transactions and race to solve a cryptographic puzzle (Proof of Work). The winner adds the block and earns newly minted BTC.

04

Block is confirmed

The new block is appended to the chain. Each subsequent block adds another confirmation — making reversal increasingly impossible.

// BEYOND BITCOIN
Ethereum (ETH) introduced smart contracts — self-executing code stored on the blockchain. Instead of just transferring value, Ethereum runs decentralized applications (dApps). Think: programs where the rules are enforced by math, not companies. Ethereum moved to Proof of Stake in 2022 (the "Merge"), slashing energy use by ~99%.
Solana (SOL) is a high-performance blockchain processing thousands of transactions per second at low fees. It uses a novel "Proof of History" mechanism. Popular for NFTs, DeFi, and consumer apps. Trade-off: more centralized than Bitcoin or Ethereum.
DeFi (Decentralized Finance) recreates financial services — lending, borrowing, trading, earning yield — using smart contracts. Protocols like Uniswap and Aave let anyone access financial tools with just a crypto wallet. High reward potential, high risk — do your own research.
NFTs (Non-Fungible Tokens) are unique blockchain tokens proving ownership of a specific item — digital art, music, or in-game assets. Unlike Bitcoin, each NFT is one-of-a-kind. The hype of 2021–22 has cooled, but NFT infrastructure continues evolving for gaming, ticketing, and identity.
// 03 — GET STARTED

Choose an Exchange

To buy crypto you need an exchange account. Use our links — you may earn a signup bonus, and we may earn a referral fee at no cost to you.

CB
Coinbase
Best for beginners
TOP PICK
The most user-friendly US exchange. Regulated, insured, publicly traded on Nasdaq. Ideal first exchange — simple buy flow with Apple Pay / debit card support.
Maker fee
0.4%
Coins
250+
US regulated
✓ Yes
SIGNUP BONUS
$10 BTC after $100 trade*
Open Coinbase Account →
KR
Kraken
Best for security
Founded in 2011, Kraken has never been hacked. Excellent for intermediate traders with futures, staking, and lower fees than Coinbase.
Maker fee
0.16%
Coins
200+
BONUS
Fee discounts via referral*
Open Kraken Account →
GEM
Gemini
Best for compliance
SOC 2 certified, NYDFS licensed. Founded by the Winklevoss twins. Strong focus on regulatory compliance and institutional trust.
Maker fee
0.2%
Coins
70+
BONUS
$15 BTC after $100 trade*
Open Gemini Account →
⚠ Disclosure: Links above are affiliate/referral links. If you sign up through them, this site may receive a commission and you may receive a bonus. Terms are set by each exchange and subject to change — always verify on the exchange’s site directly. Not financial advice. Crypto is highly volatile; you could lose your entire investment.
// 04 — REFERENCE

Crypto Glossary

HODL
Hold On for Dear Life — slang for holding crypto long-term regardless of price swings.
WALLET
Software or hardware that stores your private keys. Not your keys, not your coins.
PRIVATE KEY
A secret cryptographic code proving you own a wallet. Never share it — ever.
SATOSHI
The smallest Bitcoin unit — 0.00000001 BTC — named after its creator.
HALVING
Every ~4 years, Bitcoin mining rewards are cut in half, reducing new supply.
GAS FEES
Fees paid to Ethereum validators to process your transaction. Varies by network load.
ALTCOIN
Any cryptocurrency that is not Bitcoin. Ethereum, Solana, and thousands more.
STABLECOIN
A crypto token pegged to a fiat currency like USD. USDC = $1.
SEED PHRASE
12–24 recovery words for a wallet. Back it up offline — anyone with it controls your funds.
DCA
Dollar-Cost Averaging — buying a fixed amount on a regular schedule regardless of price.
COLD WALLET
A hardware device (Ledger, Trezor) keeping keys offline and away from hackers.
FOMO / FUD
Fear Of Missing Out / Fear Uncertainty Doubt — emotions that drive irrational trading.
// 05 — READ MORE

From the Blog

Plain-English deep dives on wallets, blockchain, investing strategies, and more.

Wallets & Security

What Is a Bitcoin Wallet? Hot vs. Cold Wallets Explained

A wallet doesn’t hold your coins — it holds your keys. Hot vs. cold storage, seed phrases, and how to choose.

Read article → Fundamentals

Bitcoin vs. Ethereum: What’s the Difference?

The two biggest cryptos were built for different jobs. A side-by-side look at supply, technology, and use cases.

Read article → Investing Strategy

What Is Dollar-Cost Averaging (DCA) in Crypto?

The simplest way to buy a volatile asset without timing the market — how it works and how to set it up.

Read article →
View all articles →