please say what kind of games you are going to play, and what your budget is. also if you have any preferences of any kind.
and i'd like to add. gaming with a normal keyboard/mouse is good aswell. I play with some dell keyboard I had laying around and it's been my trustfull asistent for over 8 years. and my mouse was a 34 euro gaming mouse. nothing to fancy. but it gets the job done just as good as a 150 euro mouse.
also, a tower is dependent on your taste. how about you look some up you like and post them here so we can say, yes that's a good case, or no, you shouldnt go for that one