Don’t use the coarse adjustment knob on high magnification…you’ll break the slide!!!
Place slide on stage and lock clips
Adjust light source (if it’s a mirror…don’t stand in front of it!)
Use fine adjustment to focus
Slide 26
http://www.cerebromente.org.br/n17/history/neurons1_i.htm
Google Images
http://science.howstuffworks.com/light-microscope1.htm