Big Johnno:
I'm not aware of any video. Starting a 206 isn't rocket science.
If you're worried about cooking an engine, then I'd recommend two things:
1. Get a decent conversion course with a reputable instructor, express your concerns, get a very thorough brief he'll watch you on your first few starts anyhow.
2. Go through lots of dry runs / touch drills in the seat, practising different scenarios and what you'd do in each case.
And always run through what you're planning to do before every start - things happen quite predictably in most cases and it's a question of being prepared for the abnormal.