There are many. Simple microscope, compound microscope, light microscope, scanning electron microscope, Transmission Electron Microscope, Dissection microscope, etc,but all together there are about 20 different types of microscopes.
There are two basic types scaning electron microscope (SEM) which will show the surface of the subject and TEM which reveals the density.and because your gay
Compound microscopes usually have two types of lenses, the concave and convex. The concave is more of an hourglass shape, while the convex is more of a rounder shape.