Shudokan and kata resources?

[Elizabeth]

Hello,

I'm studying Shudokan karate which I gather is a relatively small branch of karate. I would like to find some reference materials (books, dvds) to help me with kata, stances and so forth but I don't want to learn the "wrong style". Are there any reference materials that would be suitable for me? So far all I can do is look on Youtube after I have already seen the kata, so I know that it's the right one. I'm currently learning Pinan Nidan but have only seen the first third so far.

Thanks!