For a more general/conceptual understanding of blockchain technology and its applications, including non-cryptocurrency applications, "Blockchain Revolution" is a good read.
 Mastering Bitcoin
 Blockchain Revolution
[Blockchain Revolution by Don Tapscott, Alex Tapscott](https://www.amazon.com/Blockchain-Revolution-Technology-Chan...)
[The Business Blockchain by William Mougayar](https://www.amazon.com/Business-Blockchain-Practice-Applicat...)
[Digital Gold by Nathaniel Popper](https://www.amazon.co.jp/Digital-Gold-Bitcoin-Millionaires-R...)
If you want to dig deeper, read [Mastering Bitcoin by Andreas M. Antonopoulos](https://www.amazon.com/Mastering-Bitcoin-Unlocking-Digital-C...).
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