I am really excited to become an avid fish keeper. I have had my tank for about a year, and I think one of my fish are pregnant. I have 2 angel fish and 3 platys in the same tank, and I know that was a mistake to start off with, but they seem to be doing just fine. I want to get a bigger tank to give them more room, and I was just wondering if there were any really cool websites that have somewhat cheaper stuff than I could go pick up at the store.

Also, I have only been feeding my fish flakes, what is a good way to vary their diet, and where can I get different types of food?

Are there any books that would be good to read, to help me learn more about fish?