Here are four forums that may be interest to the Do-It-Yourself types and those who want to learn about and familiarize themselves with their car's quirks and characteristics:

1 -
2 -
3 -
4 -

And here are two FaceBook pages that may be of interest:

1 - R56 / MINI Alliance —

2 - N14 Survivor Support Group —

There are no fees or charges for any of these links, although it might take awhile to get signed up. All can be browsed immediately.