Hmm, that's a start. And your water is:
hard/soft/in between (there are tests for this, but people with hard water usually know they have it)?
acid/alkaline/neutral (again, there are tests -- this is pH)
nitrIte? ammonia? (should be 0 after cycling) nitrAtes? (you guessed it, tests) Important because some fish should only be introduced to a mature and stable environment, but given that, they are quite hardy.
Fish you have seen that you thought were cool?
Cichlids are awesome parents, come to the glass and "interact" with you, and come in lots of cool patterns and colors. But, some have tricky water requirements, most are territorial, many can be downright aggressive, and few are really recommended for beginners/community tanks. Still, some are not that hard and with a big tank like yours and the right setup, you could definitely have them.
Tetras run the gamut from difficult and shy to brazen and hardy, hitting every step between. Their water needs vary as well.
Danios are peaceful, pretty, and hold up fairly well, but have a bad habit of jumping out of the aquarium.
White Cloud minnows and rasboras are often suggested for the beginners/community aquarium.
Barbs, like tetras, run the gamut. One of the prettiest barbs, the tiger, has a terrible reputation, but there are those who love them like no other.
Gouramis are a particular favorite of mine (we all have them) and can be delightful in a community aquarium. they are large and slower moving, but very graceful and attractive.
Angels and discus are beautiful, but not the best choices for beginners or community aquariums, though no doubt there are those who have been successful with them.
Catfish, plecos, and loaches each definitely have their own following, and for good reason. They come in some of the most interesting shapes and sizes of all the tropicals, and they are the workhorses of the tank, always cleaning up after the the other fishes (food, not waste). Many are ideally suited to community tanks, where the bottom is scarcely inhabited without them.
Livebearers (like guppies, mollies, and platies) are ever popular because they are pretty, prolific, peaceful, and inexpensive and they add color and interest to the tank.
Who have I missed?
Sharks? Killifish? Bettas and paradise fish? I'm sure I've missed many people's faves and they will now have to put a word in.