Just want to say that I don't think The Wedding Video is a good one to learn Cathe's style.. Yes, the tempo is slower, but the choreography is so simple that I don't think it really would do anything to help you learn her other stuff. That's the only "easy" Cathe tape I own, so I can't say anything about the other tapes that were suggested. The Wedding Video just seems so completely differnent frome the other tapes I have--its a pretty intense video considering the not-too-challenging choreography, but I just don't think it helps with learning her harder stuff...
My suggestion is to get any of cathe's tapes and just preview, and do them without a step the first few times so you can concentrate on the choreography without getting so winded from the intensity.
Wendy