I haven't done one in quite a few years, but if memory serves the poo was put into a special container and then filled with water. The container filtered the majority poo out and you put a slip cover on the top and let it sit for 10 minutes or so. Then you dropped the slip cover on the slide and started searching. I think we looked through a 40x lens for the majority of eggs, but you'll need something stronger to find coccidia I believe.

You can look at a direct smear, but it's much harder to see anything with all the poo.

You'll also want to browse some images of coccidia, hookworm, and various other eggs and protozoa. That way you'll know if you find anything.