Let's get started. To be prepared for this module, you should study chapter 17 in the Essentials of Strength Training and Conditioning (2nd edition) text. The first thing we'll do is discuss the different types of free-weight and machine exercises. Take a look at this study sheet; it summarizes the different categories of exercises. Note that the exercise categories use the body section, joint involvement, and the specific body segment, joint, or muscle group as identifiers.