Summarize this article in one sentence.
Look at websites like Backstage for open casting calls in your area. Search online casting forums for open calls for auditions for television commercials. Most sites will have a detailed list of open calls as well as what type of look they are searching for. Respond to casting calls that seem of interest to you or calls that match your physique. Another good way to network and find out about auditions is to take acting classes. Sign up for acting classes and work on your performance skills. You can also meet other aspiring actors and find out about auditions through them. Look for acting classes at your local performance center. . A talent agent can help connect you to television commercial auditions quite easily. But finding a talent agent can be competitive and difficult to do. Contact top agencies with your resume and headshots. Once you find an agent, they can then send you on casting calls that are a good match for you. Before you find an agent, work on building a resume of roles. Go on many auditions and take acting classes. Chances are an agent will pay more attention to you if you have a few years of training and experience in the business.

Summary:
Look at online casting websites and forums. Take acting classes. Find an agent