Welcome Jess
Up the top there are little tabs starting with User CP, All Albums, Blogs etc. Go to the Search one and type in one or two words that you want to find answers for and a crap load of thread topics will become available. The trick is to determine what information is useful to you and what is not.....
As far as suspension mods go you have a brilliant base to start with in an 02 STI (I used to have a white one
). Can't go wrong with coilovers, Anti Lift Kit (ALK), Roll Centre Kit and possible some thicker adjustable sway bars front and rear. Some folks used and recommended in WA are Wheels World (ask for John) or Wilkinsons Suspension to name a couple. There is a workshops thread here -->
http://www.perth-wrx.com/vb/mechanicals/6775-perth-workshops.html
Enjoy your bug eye in the mean time