Learn bitcoin: every Galaxy Mind guide in one place
New to bitcoin? Start with how to buy it safely, then learn how to pay with Lightning and where to spend it. Business owners can learn how to accept it, and curious miners can see how renting hashrate works. Every guide here is free, and none of them carries an affiliate link.
Start here
The first questions most people ask, answered in plain words.
How to buy bitcoin safely
Six careful steps, the scams to avoid, and seven books worth reading.
How to pay with Lightning
Pay a Lightning invoice even if you do not own any bitcoin yet.
Bitcoin glossary
Clear definitions for the words you will meet, one term at a time.
Is it too late to buy bitcoin?
A live gauge of market signals plus the fixed 21 million supply.
Spend bitcoin
Where bitcoin works as money today, with every shop checked by a person.
Online stores that accept bitcoin
The full verified list of independent shops, grouped by what they sell.
Spend bitcoin by category
Browse clothing, food, hardware and more, with live shop counts.
Buy coffee with bitcoin
Roasters that ship beans and take bitcoin at checkout.
Spend and replace
Pay in bitcoin, rebuy the same amount, and keep your stack whole.
Nostr marketplaces
How open, Nostr-based markets work and how they differ from a directory.
The state of bitcoin directories
Which merchant directories are still alive, checked one by one.
For businesses
For shop owners who want to take bitcoin and be found by people who spend it.
Mining and hashrate
How blocks are found, what the odds look like, and how renting hashrate works.
How to rent hashrate, step by step
Point rented SHA-256 hashrate at the pool of your choice.
Lottery mining bitcoin
The honest odds of finding a block, and renting versus owning a miner.
Solo mining odds calculator
The exact chance of finding a block for any hashrate and time window.
Bitcoin halving countdown
Days and blocks until the next cut to new supply.
Bitcoin treasury companies
For readers comparing public companies that hold bitcoin on their balance sheet.
Gross vs net mNAV
Three ways to value a bitcoin treasury company, side by side.
What is amplification?
How much extra bitcoin per share senior leverage adds.
MSTR vs bitcoin
When the stock holds bitcoin at a discount, and when it does not.
IBIT vs MSTR
A spot fund and a leveraged treasury company, compared live.
How we work
The methods behind every number and every listing on the site.
Ready to spend it?
The vendor directory lists independent shops that take bitcoin, and a person has checked every one of them.
Browse the vendor directory →