I have been playing bass for a year ( give or take a month) and I have been doing 99% fingers at lessons. Would it be wise to now start going into slap bass and develop that?? I know a large amount of music theory. How long would it take to get fairly well and produce done at doing slap? I also see a lot of books on the subject, would any of you recommend a book for this? I appreciate your knowledge, Thank you.