Proud owner of a 2003 X5 3.0i recently. This makes my 4th BMW.

Questions:
1. Can I change the Xenon low beam bulb myself w/o great difficulty.
2. Can I change the cabin filter myself?
3. Anyone have a used Bentley manual for sale cheap?
4. How about a used rear cargo cover in tan/beige?
5. Chrome exhaust tips for the same? Got some from BavAuto but they would not go over the OEM exhaust tip ends.

As a first time X5 owner, and this one has 80K miles and has been nicely maintained, what are some of the MOST important things I need to do/look at?

I look forward to posting on this forum and talking with the X5 community!