thank's for the input guy's, I only know a couple a guy's around here and they just work slabs, like to learn some biface reduction and you tube is great but ya can't always run to the computer, been useing paleomanjim's billy berger and Jackcrafty's video's and they are great but I'm lost on most of the terminology,I need to get a poster or something with all the point's as well thank's , Bub