Thanks Joe for your response and suggesting that I just ask my question(s) here. I'll have to do that because the Casio "search" feature isn't helpfu (and is very laborsome), nor can I find anything that specifically answers my question(s) on Google or YouTube.
On the Casio WK-6600:
1. How can I apply a 3/4 time signature to a Rhythm?
2. Aside from being able to edit a user rhythm, can new or other rhythms be downloaded?
I have more questions but I'll stop at these two for now. I appreciate any help you can offer. Thank you.