Of course every MINI owner has read their Owners Manual – one is included with the car, and it is also available online at the MINIUSA Owners Lounge (direct links to each year no longer work, but I archived the 2005 and 2006 manuals)
Then there is the Unauthorized Owners Manual, which exists as a small booklet available at some dealerships, or can be downloaded; there is a copy on MotoringFile which I have mirrored here to avoid hurting Gabes bandwidth:
Update May 2006:
Here is a scan of the ’05+ Boost radio manual.
M&I / GBMINI 