What do you think is better for someone like me, computer analysis or self analysis of games
Both, use the computer to test your thoughts during the game. Computers are calculation beasts, so learn to analyse your games yourself from and with a coach instead. A coach can humanize what a computer means.
How many books should I read, or what book is good, to have a adequate defense against a master ?
That's hard to say. But I can say that training, playing games and practicing with puzzles does more then watching video's and reading books. if you like a recommendation then a good book would be Learn from the Legends by Mihail Marin.