How to Buy and Sell Cryptocurrency
A plain-English walkthrough of buying your first crypto on an exchange — from verifying your account to placing an order and keeping it safe.

Não é aconselhamento financeiro. This article is for informational purposes only. Cryptocurrency is volatile and high-risk — do your own research.
- Most people start on a regulated exchange: open an account, verify your identity, deposit funds, then place a buy order.
- You can leave coins on the exchange for convenience or withdraw them to your own wallet for control and security.
- Watch the fees — trading, spread and withdrawal costs vary widely between platforms.
- Start small, double-check every address, and never invest more than you can afford to lose.
Buying your first crypto is simpler than it looks. This step-by-step guide covers how to buy and sell safely, what to watch for, and the mistakes beginners make. Nothing here is financial advice.
Step 1: Choose a reputable exchange
An exchange is where most people buy and sell crypto for ordinary money (pounds, euros, dollars). When choosing one, look for a clear track record, regulatory registration in your country, transparent fees, strong security (including two-factor authentication), and support for the assets you want. Avoid unknown platforms promising unusually generous rewards.
Step 2: Create and verify your account
You will need to sign up and complete identity verification (often called “KYC” — know your customer). This is normal and legally required at regulated exchanges. Use a strong, unique password and turn on two-factor authentication with an authenticator app rather than SMS where possible.
Step 3: Deposit funds
Add money using a supported method — usually a bank transfer or debit card. Bank transfers are typically cheaper; cards are faster but often cost more. Check the fees before you confirm, and be aware that some banks treat crypto purchases cautiously.
Step 4: Place your order
Choose the asset and how much to buy. You will usually see two order types:
- Market order — buys immediately at the current price. Simple, but you take whatever price is available.
- Limit order — buys only if the price reaches a level you set. More control, but it may not fill.
Start with a small amount for your first purchase so you can learn the process with little at stake.
Step 5: Move it to your own wallet (optional but wise)
Leaving crypto on an exchange is convenient, but the exchange controls the keys — “not your keys, not your coins”. For anything you intend to hold, consider moving it to a wallet you control. Our wallet setup guide explains how, and how to avoid sending to the wrong address.
How to sell
Selling reverses the process: place a sell order on the exchange, then withdraw the proceeds to your bank. Remember that selling (or even swapping one crypto for another) can be a taxable event in many countries — keep records and check your local rules, or speak to a qualified tax professional.
Common beginner mistakes
- Rushing in with too much. Start small until the mechanics feel routine.
- Ignoring fees. Trading, deposit and withdrawal fees add up.
- Falling for hype. Buying because a coin is “mooning” on social media is how people buy the top.
- Skipping security. Weak passwords and no two-factor authentication are how accounts get drained.
- Sending to the wrong address or network. Always double-check; crypto transactions are usually irreversible.
Key takeaways
- Use a reputable, regulated exchange and secure your account properly.
- Start small, understand the fees, and choose market or limit orders deliberately.
- Consider self-custody for anything you plan to hold.
- Selling can be taxable — keep records and check your local rules.
This guide is for information only and is not financial advice. Cryptocurrency is volatile and high-risk. Always do your own research — see our Aviso legal.