Gnomon 3D Training: Texture Mapping I,II,III
Making a training video is tough. Even if the students are highly motivated and interested in the topic, they're very likely to fall asleep at some point in your tutorials. You need to be very-well organized and have a nice on-screen presence, something highly under-rated.
The gnomon videos have an advantage in the Maya industry presently – they're pretty much the only folks offering tutorial videos for sale, certainly the only folks who have offered such an extensive selection (perhaps not for long) for Maya.