I would recommend getting a book such as Mark Wilson's Complete Course in Magic or Joshua Jay's Magic the Complete Course.... both of these books have magic of all types so you can delve deeper into other types of magic.
Also, performing for the same people isn't the best idea because you have enough tricks to perform for many people... it's just the fact that you perform for the same people that makes it a necessity to learn more magic.
But in any light... getting a book or DVD with many tricks on it... you can't go wrong.
Hope that helps.