Attached Link: http://www.morphography.uk.vu/tutorials.html

I have some tutorials - Heidi's Texturing for Beginners would probably be the best place to start.

Edited to add: I'd suggest you lay off remapping to begin with; keep it simple. Do some texture work using the existing map, since remapping will give you extra complexity should you want to redistribute your work. Also, doing that will give you a better idea about why remapping may sometimes be necessary, and the areas that need attention when it does.