Computer Organization and Design RISC-V Edition

This book is perfect for introducing RISC-V. It explains widely from RISC-V instruction set to processor design.
I read this book and I was interested in simple RISC-V design. (Also, the quotation at the beginning of each chapter is also good.)
If you are interested in computer architecture or RISC-V, please read this book.

Computer Organization and Design RISC-V Edition: The Hardware Software Interface (The Morgan Kaufmann Series in Computer Architecture and Design)