Look for casting notices for reality TV shows in entertainment trade publications and online sites that specialize in listing the latest casting news. There are websites that charge users fees to post information and videos of themselves in hopes of reality TV show jobs, and there are websites which offer listings of what shows are hiring and what kinds of people they need for each show, how much they pay and any other important information.
Find jobs that you want to audition and then go on auditions until a production or casting company hires you for their show. Show them why you are different than everyone else and why you would be the best person for the job. Remember that those who have become stars on reality TV have done so because they stand out for some reason, some are really beautiful, talented in a specific area or exhibit wild out of control behavior.
Learn how to become a member of a reality TV production crew. There are seminars and classes available that can teach you everything you need to know to work behind-the-scenes at a reality TV show. Once you've received your training, look for jobs as part of a television production crew on a reality TV series. Be willing to start at the bottom just to get experience so that you can continue to learn and become a valuable member of the crew.