Bitcoin for Beginners is the best place to start your Bitcoin journey. If you're an absolute newb, or even if you know the basics but just need to brush up on a few things, this is the ideal starting point.
The offer everything from Bitcoin 101, explaining the fundamentals of how Bitcoin works, to what gives Bitcoin value.
There's also a section explaining how to buy, sell and trade Bitcoin. Wherever you are in the world, there's a section detailing the best practice of buying Bitcoin. There's also articles on buying Bitcoin anonymously, and best of all how to earn free Bitcoin.
If you're into mining or wanting to get into it, there are explainer articles on there which detail how to mine, the best and most profitable miners, and so on.
There's also the all exciting layer two section which covers all the programs being built on Bitcoin. This is arguably Bitcoin's greatest strength because a programmable money, that needs no trust opens up so many possibilities.
Whatever it is you want to learn about Bitcoin, check out Bitcoin Maximalist and discover Bitcoin...