I also made some educational materials which could be useful for this book, in dedicated thread Series of tutorials helping to grasp MW
Elliptic Curve Cryptography and Diffie-Hellman Key Exchange
Hash Functions
Eliptic Curve Digital Signature Algorithm
Symmetric Ciphers
Schnorr Signature
Pedersen Commitments and Confidential Transactions
I was also planning to write about bulletproofs, but I didn’t find time and motivation.