The document provides information about the history and types of microscopes. It discusses key developments in the microscope, including the first compound microscope in 1590, Robert Hooke using one to observe cells in 1655, and Antonie van Leeuwenhoek discovering single-celled organisms. It also describes the two main types of microscopes - compound light microscopes, which are most widely used, and electron microscopes, which can achieve much higher magnifications. The document concludes with guidelines, vocabulary and procedures for safely and effectively using a light microscope.