I've been reading some of the reviews and I'm thinking since I'm new to Zumba, I should buy a previous version first? I have never tried Zumba and I'm a white girl so I have no dance skills whatsoever! But I want to get into shape and tone up and I want it to be fun or else I won't workout. I saw a commercial for this particular Zumba and wanted to try it out. What do you think would be best for me? Should I just jump in and try the World Party or start with a previous version?