Why spend time on training course slides and notes design and edition, when everything you need is available on the Net ? Provided that people better remind images rather than text, YouTube is one of the new companions of the teachers, trainers, and instructors of all kind, together with Wikipedia and a few other Web 2.0 tools.
Here's a collection of videos I've put together for fiber optics training - most are in english, some are in french. Enjoy, and feel free to use. The playlist is available here.