I have watched videos from TyisTech before and I love what this kid does. I always learn something from him. It turns out that the new PSP Go no longer uses the UMD discs and is now going to a download only environment and they have their own APP store now. He also has an unboxing video that is good to watch.
Check out his review and the unboxing video too.
You can also go to his Youtube Channel for other videos at http://www.youtube.com/user/tyistech#play/uploads