A lot of the Kosho ryu Katas are imported from a Shotokan system. Start ion that direction. There are forms that of course are specific to Kosho, those you will have to hook up with a teacher
i dont know of any sites that show the way we do kata, but there is a great site with loads of shotokan kata that we do that are downloadable, but remember......the way they perform the kata looks way different from the way we do it. http://www.ozwebart.com.au/kua/kata.htm
Thanks a lot. I have a lot of trouble remembering the katas and when two are a lot of like I mix them up. Like Pinan Shodan and Pinan Nidan, for instance.