This book basically summarizes all the info about crypto, blockchain, DeFi etc. in one place so that you don't have to search the Internet. Then it offers some stocks and ETFs to gain exposure to crypto/blockchain.
However, zero coverage on how to analyze any altcoin besides BTC and ETH (because they have no "fundamental" numbers like public companies). Everything else is basically optimistic opinions from the author on why crypto investing will profit in the long run, PROVIDED you bet on the right coin(s).