@21m

Bitcoin Core - primary bitcoin software, website created by Satoshi!

Nakamoto Institute - great resources, all Satoshi’s posts

Bitcoin.page - comprehensive info for all knowledge levels

Saylor Academy Bitcoin Course - FREE excellent 101 online course

We Run Bitcoin - Matt Odell’s guide to running btc, multisig

Bitcoin-Intro - a good starting place

CaseBitcoin - best cases for owning btc

BitcoinQnA - great FAQ for BTC

Bitcoin-Only - another great set of info

BitcoinPrivacy.guide - learn how to use bitcoin more privately

Bitbo - Bitcoin Dashboard

Clark Moody - Bitcoin Dashboard

Buy Bitcoin - Square Cash App

Buy Bitcoin - SwanBitcoin

Buy Bitcoin - River.com