Microscopes are devices designed to enable us to see things that are otherwise too small for our naked eye to observe.
The first microscopes were rather primitive and allowed magnification of objects with little resolution.
History of Microscopy
In the centuries since their initial development, microscopes have been drastically improved, and our ability to both magnify and resolve objects has increased drastically.
Magnification and Resolving Power
Here are some pointers about how to use a microscope.
If you are interested in interacting with others who engage in microscopy, here are links to societies you might wish to get involved with:
Microscope Society of America -- http://www.microscopy.org/
Royal Microscopical Society -- http://www.rms.org.uk/