I think the mech texturing vids to a fair job cover UV mapping. But you'll still have to invest some time in experimenting with your own meshes. One thing that I've found helpful is to work in the texture shaded view while playing with UV editor. Doing this with texture already applied provide good way to see how the UVs related to the actual model.

[Edit] Also, if you haven't already, run a google search on UV editing. There are a significant number of HTML based tuts online. learningmaya.com has links to a few of them.