I'm wondering if someone could recommend some number relationships that I could look into. I don't have loads of math under my belt quite yet. I'm currently in college trigonometry and college algebra. I start my calculus classes next semester and my physics classes the following semester. I think that stuff is interesting. I don't really know which relationships to look at, though. Could someone please point me in the right direction? I really just want to discover some of the properties of numbers for myself by working through some simple problems. I just don't know how to get started. Thanks in advance.