Just ordered the Pioneer from Bestbuy's website.. I am totally oblivious as to what DIY routes I can take to swap this out with my stock Concert 2. I was hoping to get some input from the community.

My car:
2009 Audi A3 2.0T Premium Quattro
- BT included
- Concert 2

My expectations and stuff through research:
- steering wheel controls integration with Pioneer dash
- no song info on dashboard
- phone integration will be with pioneer instead of Audi BT
- use SD card for song storage

Outstanding questions

1) Do I need to order any extra hardware (connectors, installation kits, etc) to install this? If I do, what do I need?
2) Will this affect any of my existing functionality in my car?

Thanks in advance for your help!