Winterpark aka musician Matt Ridgway hosts a treasure trove of tutorials and free Pack downloads on his site. A multi-instrumentalist (including guitar and Push) and electronic musician, Matt's tutorials cover useful topics such as processing a guitar using Live:
Free Racks and Tutorials from Winterpark
Meanwhile, Matt's downloads include MIDI chord effects, sampled instruments, and more. If you have an ear for lush, beautiful sounds (especially those you might hear in Shoegaze or Dream Pop music), then you'll have a lot of fun with Matt's creations.