If you want to be an Assistant Director:

The Assistant Directors Training Program, jointly sponsored by the DGA and the Alliance of Motion Picture and Television Producers, accepts a limited number of candidates each year to participate in on-the-job training to become Second Assistant Directors. Candidates compete for a program position through a rigorous selection process. Once accepted, a Trainee completes 350 or 400 days of paid, hands-on work experience on actual film and television projects. An HMO is provided. He or she also attends a number of mandatory seminars on various aspects of the industry. Each Trainee who satisfactorily completes the program's requirements is invited to join the Guild. The Training Program’s ultimate goal is to provide the Directors Guild of America and the Alliance of Motion Picture & Television Producers with Assistant Directors of the highest quality and professionalism.  There are two programs, based in Los Angeles and New York. While there are no guarantees that this program will lead you to the job of your dreams, opening that door can be a stepping stone into a major career.