odonnellb- Congrats on the Cyclo, it's a great piece of equipment.
IMO you'll be fine practicing on most anything. Whenever I've coached newbies with one they're up to speed in a matter of minutes and they don't ever really need any input from me.
Some thoughts: Center the pads so they don't rub together *too* much (they probably will rub a little). Don't use too much product and remember to clean/change pads after a while as the little pads do load up. Keep the obvious stuff in mind and be gentle on crown lines, edges, corners, etc. where the paint might be thin. Keep the pads in contact with the paint when you turn it on so it doesn't sling product everywhere. Don't overwork the product to where it dries and watch for dried out product on the pads too (this gets back to the inspect/clean/change pads thing). Some products (e.g., AIO) just don't work well by Cyclo but those aren't the norm. Generally, a long work time is beneficial.
I predict that you'll find it very easy to handle; I frequently use mine one-handed. My father was in his late seventies/early eighties before I convinced him to start using one ("come on Dad, help me out here, you do that side...") and he found it very easy. Go polish something, you'll soon see just how user-friendly it really is
Oh, and waxing by Cyclo is one of my favorite detailing processes, I genuinely enjoy doing it. You might look into some MF bonnets to buff the wax *off* too (use them over foam pads, not wool, works better).
Seriously, go use it on something and don't worry about messing up (just use common sense). You'll do fine.