Crypto explained in plain English
No jargon. No hype. No silly questions.
If you've nodded along in conversations about crypto while secretly having no idea what they were going on about, you're in exactly the right place.
Let's start at the very beginning, and take it slowly.
So, what actually is it?
Cryptocurrency (usually shortened to just “crypto”) is money that exists only as digital records on computers. Think of it simply as 'digital money' that doesn't exist in any physical form. There are no coins or notes you can hold — it's all numbers on a screen, rather like the balance in your online bank account.
The big difference is that no bank or government runs it. Instead, it lives on a shared network of thousands of computers all over the world. That's the part people often find strange at first: there's no head office, no manager, and nobody you can ring up to complain. However, it means you can fully control your own money, for example by sending funds to someone else virtually instantly at very low cost, without needing a bank.
Bitcoin, invented in 2009, was the first crypto coin, and it's still the best known. Since then, thousands of others have appeared — some serious, many not (the latter are often referred to as 'meme coins').
How does it actually work?
Here's one piece of jargon worth learning about: the blockchain.
Picture a giant shared notebook that records every crypto transaction ever made. Thousands of computers each hold an identical copy. When someone sends crypto to someone else, that payment is written into every copy of the notebook at once — and once it's written, it can't be quietly rubbed out or changed.
That's a blockchain: a shared record book that no single person controls (which makes it virtually impossible to cheat or fake). You don't need to understand the clever maths underneath that makes it all work, any more than you'd need to understand the workings of an engine to drive to the shops.
Each cryptocurrency exists on its own blockchain, so Bitcoin operates on a different blockchain to Ethereum for example. Think of it like a highway system, with crypto coins as cars, traveling along the roads from A to B.
The practical bits: wallets and exchanges
Two more words you'll bump into constantly — and both are simpler than they sound.
A wallet is where your crypto lives. It's not a physical wallet; it's an online app or sometimes a small device like a USB drive that holds the digital 'keys' to your money. Lose those keys and you lose access — so, unlike a bank, there's no “forgot my password” button to bail you out. (Yes, this matters. We nag you about it properly on the Stay Safe page.)
An exchange is simply a website where you swap ordinary money — pounds, dollars or euros for example — for crypto, and back again. Think of it as a bureau de change for the digital world. The well-known ones like Coinbase and Binance work much like an online share-dealing account.
The two questions everyone asks
“Is it too late for me to bother?”
No. You've missed some early excitement, certainly — but you've also missed a great deal of chaos, fraud and spectacular crashes. Arriving late and cautious is no bad way to arrive. And understanding it is useful whether or not you ever put in a penny.
“Isn't this all just gambling?”
Sometimes, yes — plenty of people treat it exactly like a casino, and lose accordingly. But the underlying technology is real and useful, and it's increasingly being woven into the modern financial system. The honest answer is that crypto can be an investment or a gamble, depending entirely on how you approach it. This site is here to help you approach it like a grown-up — or to decide, with clear eyes, that it's not for you at all.
A few words you'll hear
Keep this list handy. No need to memorize it.
- Bitcoin — the original and best-known cryptocurrency.
- Ethereum — also known as "ETH", it's the second-biggest cryptocurrency, which can run other programs as well as act as money.
- Blockchain — the shared record book that keeps track of who owns what.
- Wallet — the app or device that holds your crypto.
- Exchange — a website for swapping normal money for crypto and back.
- Stablecoin — a type of crypto designed to stay equal to one dollar (or pound), to avoid wild price swings.
- Volatility — the polite word for how violently crypto prices can lurch up and down.
- Token — another word for a crypto coin. 'Crypto' and 'token' are interchangeable.
- Defi — short for 'decentralized finance'. This term is used to describe a financial system that doesn't require banks. Users can send money directly to each other without needing banks to store, process, or send the funds.
Ready for the next step?
If this was helpful, my free Curious About Crypto guide gathers the essentials in one place. Please read it carefully, you'll find it extremely insightful and useful.
Get the Free GuideNothing on this website is financial advice. I'm an educator, not a financial adviser. Cryptocurrency is volatile and you can lose money — never invest more than you can comfortably afford to lose, and consider speaking to a regulated financial adviser before making any investment decision.
