BMW drivers' guide app for phone & tablet

More info here:
http://www.bmw.com/com/en/owners/bmw_apps_2013/apps/bmw_drivers_guide/index.html
For most models from 2011/12 on. You'll need your VIN to set it up.
I've found the android version quite helpful as a searchable reference when I'm not near the manual which came with the car.