When you first hit the gym it can be tough to know which exercises to do. Usually an instructor will help you out by designing your first program. Getting the form right is important in the beginning. As your strength gains and you start to see results you also start to take notice of which exercises work the different muscle groups in the body. If you are not sure how to start bodybuilding then getting a guide that discusses the most important factors can be a great way to go. You will learn all about the muscles, the different types of exercises and how diet and rest fits into your overall training program.