If you're interested in coaching one sport in particular, most colleges will provide sport-specific courses. These courses are designed to allow you to develop practice plans, analyze strategy and teach techniques to a specific sport of your choosing.
If you don't have a particular sport in mind, you can always take a few extra theory courses to get your feet wet. Common sport theory classes available are baseball, basketball, cheerleading, cross-country, football, lacrosse, soccer, softball, swimming, tennis, track and field, volleyball and water polo. Typically, most programs require that you take at least three of these theory classes.
If you are only going through a community college certificate program, often times your classes will only suffice for youth or high school teams. If you're interested in coaching any higher level than high school, a four-year bachelor's degree may be necessary. It is important to check with your institution and possible places you'd like to coach to make sure you get on the right path.
Remember that coaching is an important role in a successful team. You will be dealing with the team as a whole and as players or members individually. While wanting to win puts pressure on you the coach, be sure to remember to have fun and treat each team member with courtesy and respect.