Honestly wouldnt read books but if you intend to - The grinders manual is ok for starting in cash.
Dont know much about MTT books but would advise you to watch a winning player on twitch and think about the reason why they are doing what they are doing.
Why wouldn't you read books?
A lot of outdated information.
Paying $25 for a book or something like run it once essential for a month......or even $5 red chip poker core is far more valuable.