Hey guys,
I'm new to the Audi family, and great to see such an active forum!

I was wondering if someone would be able to help me quickly -

I just bought a used 2010 TT Coupe which has a basic radio center unit. I was hoping to buy a navigation unit and replace the center console with it, so I have navigation in the dash. I was thinking of buying the OEM one (so it integrates well), and then having a mechanic install it. I was searching for the part online and had a few questions.

- How do I figure out what part I'm looking for? Googling around seems to be leading me to a nav unit called the "RNS-E" - is that the one I'm looking to buy? Are all RNS-Es the same?

- Do I need to buy an antenna, map software, or anything else to go with it?

- Once I have the parts, is this an installation any mechanic should be able to do? (Replacing the basic radio unit with the nav unit, hooking up the nav unit to the antenna/steering wheel, etc.?)

Thanks a lot for your help; apologies in advance if these are silly questions!