Old dude speaking, here:

• if you're inexperienced like you said you were, you probably should not let some random person pay for everything at least when you first start dating them... They may (I insist, conditional form) quickly come to expect something out of all the money they're spending with you. Maybe not but I would not take any chance, if I were in your shoes.
• As an old dude (bis) I think I should mention I'm always willing to purchase books for younger people (boys as well as girls), even kids, provided there is no possibility for my gift being misinterpreted as something I certainly do not wish it to be.