What type of fish interest you? If we all gave you suggestions, you'd end up having read every fish that your local PetSmart and
LFS carry, plus a few others.
However, if we get an idea of the types of fish that you find interesting (some people go for the outrageous color, some like large schools of tiny fish, some people like the oddballs, some like making natural ecosystems), we can then help you with the fish within that category, let you know which are aggressive, which are peaceful, which are easy to keep, and which will die if the
pH changes even the slightest bit.