Keeping fish can be really fun, and relatively low maintenance. Once you are aware of the procedures and precautions of keeping fish, the rewards are very satisfying, and maintenance can be minimal. Some things may seem daunting and you do need to put in a lot of effort when first setting up your tank and learning how to maintain it. Be careful not to rush into things, and do your research before hand.
Some fish require different water parameters, and some can be hard to keep. However there a lot of beautiful fish that are very easy to keep, as long as you do your part in keeping the tank clean, healthy and safe for your fish. A fish shop, or a quick google search should point you in the right direction when choosing fish.