Do you have an adequate microscope ..or access to one? That is going to be a vital tool ..unless maybe a jeweler's loupe at 30x may work ..hmmm....
Anyhow, preparing a slide or "plate" is pretty straightforward ..if you don't plan on saving it for future viewing. You can get away with using a toothpick to present some of the poo onto the glass slide ...and then either some deionized water ...a DROP.. or immersion oil (you can probably find this online or borrow some from the lab)
As for identifying the "cooties" you may find ...and I'm pretty sure you'll see SOMETHING, as
some cooties is a benefit to most of us... you could go online and look or use your trusty Microbiology textbook. (I have a few of those around here ..let me know if I can help
)
Also... if you find that you can't do it yourself or it's too much trouble, etc. ...my Vet only charges $15 for fecals and usually does multiple specimen for that one fee. (I live in an expensive big city, too ...so check with your Vet ..won't hurt!)
EDIT: You may find that some of the potential bacteria and such cannot be seen without staining them ...in that case, you'll need access to a Microbiology Lab. If you are not a student at a facility with such a place, check with friends and community folks ..someone you know could be.... and if anything like me, the geek in them will be just enough for them to agree to help you out