Mastering Bitcoin is also a good book for begainner. And it is the second book I read about bitcoin. I don't read the whole book, just read tow chapters(Transactions, Advanced Transactions and Scripting) as a complement of my first book Grokking Bitcoin. If I have more time I will read the whole book.

Recently, I want to write a self-used bitcoin wallet. So I decide to learn about basic knowledge of bitcoin. And I find Grokking Bitcoin. It is a good book for beginner and talk about the basic knowledge of bitcoin...