if you don't know what reverb is you should really sit down and learn about audio engineering,production tools and terms before jumping to buy equipment and software
not trying to be a jerk but I would spend some time on this site reading some of the threads that are stickies the ones with the gold envelopes
and throw in some video from Youtube
you question is super vague!!!!!!!!!!
What is your budget and what kind of studio are you trying to built??
professional studio that rents out space or professional studio for personal use(or small label)??
are you recording acoustic instruments(drums,guitars,etc.)???
are you building from the ground-up as in new construction??
are you just a trying to be a bedroom producer??
1.figure out what room or rooms you're going to be using
2.figure what you're going to be doing it that room or rooms
-Coach Antonio