Roynie and I did one of BMW's first (if not, the first) Adventure Maintenance courses in Wales, which we both found was a great hands-on introduction to the sort of maintenance/preparation/repairs that you might need if embarking on an enduro-style trip. It was only a day course and, from memory, it covered things like cleaning/changing the air filter, brake pads, taking the wheels off and changing tyres, etc.
All simple enough stuff, but a great confidence booster for folk like us who tend to rely on dealers. As it was only a day course, we backed it up with a course at the local college. However, I have to say that Simon Pavey and his team filled me with a great deal more confidence that they knew what they were talking about than the eccentric tutor at the Isle of Wight College. Armed with what they had taught us, we would have done just as well (or better) with a Haynes manual.