I think it is just like changing the oil in any other BMW.
Don't get under a vehicle that isn't properly supported. Jacks don't count. Jackstands or appropriate ramps do.
Use good synthetic oil, 5w-30. I usually used OE BMW, as it wasn't expensive.
Use only an OE filter, from the dealer.
Replace all plug gaskets, o-rings, etc.
Drain the oil warm, not hot.
Filling is a bit of a hassle if you don't have a dipstick. Not sure if your model has one or not. My 535 didn't.
I think the lack of DIY posts is because most of these vehicles are still under the included maintenance program, and people have come to realize over the past few years that if you run it no longer than the service lights call for, your engine won't fail prematurely. There are far fewer people doing intermediate oil changes than there were on early E53s, for example. My 535 and X3 both ran great using the BMW service recommendations. I ran the X3 to 24,000 km instead of the 28,000 km the lights called for, and changed the oil early, but that is because I am keeping it for awhile.
Here is the only thread I found in a quick search:
http://www.xoutpost.com/bmw-sav-foru...-diys-e70.html