Welcome to AquariumAdivce.com!!!
the best general advice I can give you is to research, research, research prior to begining or making any purchases. We have a great "Articles" section at the top of the page with lots of useful info on getting started. You should first decide what type of tank you intend to keep down the road (FOWLR
, reef) and then narrow down a "must have" livestock list. Once you know this, you can settle on tank size, lighting and type of filtration. There is lots and lots to know before you get started. Keep researching and stopping by AA with your questions.