Since Merlin has taken his website down, I am working on recovering his Sketchup guides to put on our site. Eventually I'll get a section made where you can view them all but for now I am just working on getting a guide template made with a Sketchup theme and then porting over all of the guide content into my template and fixing outdated information and grammar mistakes.
I've only gotten two guides done so far, you can find them here:
Sketchup IntroductionSetchup Texturing