DigiScrap With The GIMP
This section has digital scrapbooking-specific tutorials using The GIMP. They're not written for the absolute beginner (as were the Kitbashing howtos) and do require a familiarity with The GIMP and image manipulation in general. That said, they're designed to be fairly simple and easy to follow. Google and the gimp.org documentation should provide any details that I miss (until I get round to writing a Beginners Guide).
See the Tutorials section for more general GIMP tutorials, notably the section on aging colour photos which might be useful to digiscrappers. I plan to add a Beginners Guide to that section at some point too.