Ooo i recommend the newsletter to start with if you want to know general crypto news and information and stuff. The Book itself you should download while it's free, but can take your time to read.
I think the newsletter in general is very to the point as they aim to only summarize news that you can act on (buy/sell coin, sign up platform etc...).
Most newsletter talk about price which isnt really helpful since i'd rather go to CoinGecko's website itself to see the live price action.
I will therefore subscribe to it ! Thank you for the tip !