New member here

As the title says i'm a new member on the boards. Well having been a BMW owner since i started driving. I felt like a change so i'm picking up a
2007 A4 Cabriolet 1.8T S line on friday.

So any reviews tips, advice would be more than welcome. I have a few question so any feed back would be great.

1. Where can i find pictures of modded models ?
2. Alloys i'm looking to put 19" or 20" black would they fit ?
3. Aftermarket sounds
4. Reviews how is the drive and so on

Thanks guys