Materials are coming to Second Life™. Part of the feature is Normal Maps. So, if you want to take advantage of the new feature you are going to need to learn how to make Normal Maps. There is a new tutorial that teaches one how to use the free GIMP image editor to make them.
Indigo Mertel Plurked the link. If you’re Plurking, friend Indigo. The video is 23 minutes long.
vscorpianc made the tutorial. Vscorpianc has 277 videos on YouTube. It is a nice collection of GIMP and Blender tutorials.
She does an excellent job and speaks very well. None of the umm… errr… uuhh… or false starts and redo’s.