Kann mir jemand ein Buch empfehlen, mit welchem man die Grundlagen der Kryptowährung erlernen kann?

the basics of cryptocurrency

If you are using “the cryptocurrency” Bitcoin means, then everything is already said by TheOrangePill. I can additionally understand various podcasts such as 21 or Bitcoin as well as recommend the Bitcoin library.

If you mean “Krypto” in general (Bitcoin <> “Krypto”), then that is far too unspecific and you should still understand Bitcoin. From my point of view, however, everything else is not necessary, as Bitcoin will make everything obsolete.