Look at the STICKY topics at the top of many sub-sections. (If you are accessing the site via a mobile phone, you need to select a SETTING to view Stickies.)
Basically, you open the sub-forum that is pertinent to your inquiry (in this case the Generation 2 area) then click 'POST NEW THREAD'.
That said, you DID post a question/topic back on November 23. (about washing the car with the hard spare cover). So you are on your way. Additional posting capabilities occur when you get 5 or 20 posts.
If you are unsure of other things, post back here.