Spend a day or so searching around the site, and post back with any questions you couldn't find answers to. For example, typing in "suspension upgrade" brings up 452 threads.
Anything you absolutely cannot find through searching, I know there are a few members more than happy to answer questions. But basic stuff like "what upgrades should I do to make my car faster," "what exhaust fits," "suspension upgrade," "ecu tuning" and so on have most definately been debated and (most likely) answered in the 20 or so years the site has been active.
Don't misunderstand my intentions, we are a friendly community here, but as a new member you need to kind of do your own leg work in the beginning.