You need a good heart and not ashamed to talk to girls. Relationship will build automatically.
Man are you living in a cave? I'm sure you'd be getting laid very often with that logic.
@Patatas one more point - Grow long beard

Yep and that fuckboi haircut. My point is, it doesn't matter what types of self help books you read to get girls, if you're ugly and broke you're of no interest to anyone.