#2
not exactly the way that guy does it, but check out some miyavi, learn the basics from him and then you can come up with your own stuff. also for this kind of technique (slapping) a good acoustic is a must, even better if its semi acoustic.

also check out my take on slapping, www.youtube.com/giumetalboy
#4
preston Reed (the creator of that tapping-style) has an instructional video where he goes through his song tribe and explains the technique. I found it through some torrent site.