Bitcoin crash course
Understand Bitcoin
in 5 minutes.
No jargon. No hype. Just the essentials — explained visually.
Scroll to begin
Bitcoin is two things at once
Digital money
Anyone can send it to anyone, anywhere, anytime. No bank required.
A public ledger
Every transaction ever made is recorded on thousands of computers worldwide.
This ledger is called the blockchain. It is public, verifiable, and identical on every computer in the network.
No one controls it
Bitcoin runs on math, code, and energy — maintained by thousands of independent computers (called nodes) around the world. All you need is an internet connection.
The problem Bitcoin solves
Every dollar in your bank account is controlled by someone other than you.
Banks can:
Freeze your account. Block transfers. Set limits on your own money. Deny access on weekends and holidays.
Governments can:
Print more money whenever they want. More dollars printed means every dollar you hold buys less.
This is inflation
Same candy. Double the price. Your money lost half its purchasing power.
See: Venezuela, Argentina, Turkey, Lebanon...
Bitcoin fixes this.
Only 21 million Bitcoin will ever exist. No one can print more. That rule is enforced by code and cannot be changed.
How it works (simplified)
Miners
Specialized computers that create new Bitcoin and process transactions. They compete to solve math problems and earn Bitcoin as a reward.
Nodes
Computers that verify every transaction follows the rules and store a complete copy of the blockchain. They keep miners honest.
You don't need to buy a whole Bitcoin
Just like
$1 = 100 cents
Bitcoin has
1 BTC = 100,000,000 sats
A satoshi (sat) is the smallest unit of Bitcoin. You can buy $5 worth, $50 worth, or $5,000 worth — whatever you want.
Bitcoin is not "crypto"
Bitcoin
No company behind it. No CEO. No marketing team. Rules enforced by code that no single person or group controls. The only money with zero outside control.
Other "crypto"
Most have founding teams, companies, VCs, and insiders who can change the rules, pre-mine tokens, or shut down the project.
When people say "crypto," they lump thousands of tokens together. Bitcoin is fundamentally different in design, purpose, and governance.
Your keys, your coins
To own Bitcoin, you need a private key — a secret code that proves the Bitcoin is yours. This secret is usually represented as a seed phrase: 12 or 24 ordinary words in a specific order.
Option A: An exchange holds it for you
Coinbase, Kraken, Cash App keep your keys on your behalf. You log in with a username and password like a bank account. Convenient, but they control access.
Option B: You hold the keys yourself
Written on paper or stored on a hardware device ($50-$150). No one else can move your Bitcoin — not even the device maker. True ownership.
Bitcoin = responsibility = ownership = freedom
The real risks
Volatility
Bitcoin's price changes daily — sometimes dramatically in either direction. This is normal for a new asset class.
Irreversibility
Bitcoin transactions cannot be undone. Send to the wrong address and it's gone forever. You are responsible.
Scams
Irreversibility makes scams permanent. Three rules to memorize:
Real Bitcoin does not reach out to you. Ever.
Losing the secret
Lose your keys = lose your coins. Forever. No customer support. No recovery. Back up your seed phrase.
That's it.
You now know more
than most people.
The point of this page wasn't to convince you to do anything. It was to give you what you need to decide for yourself.
Ready to go deeper?
Two paths. Both free. Pick the one that fits.
STAGE I
Understand first
Money basics, Bitcoin fundamentals, history, and common misconceptions. Take your time.
Start learning →STAGE II
Learn by doing
How to buy safely, where to keep it, how to send and receive. Practical mechanics.
Buy Bitcoin safely →Thanks for reading. Your progress is saved automatically.\n Curious what Bitcoin was worth on your birthday? Check our price history.