I disagree. You don't need anything too fancy run a basic fecal. I picked up a microscope that was a college lab's old equipment (off of ebay). It was like $50 and I have done fecals with it. The only hard part about fecals is identifying what you see. Hopefully the book you have will help with that. What you should be looking for is a basic compound microscope (just like the ones everybody used to use in high school). I wouldn't worry too much about picking up a used one, they are relatively easy to take apart and clean if needed (at least mine was). Hope this helps.