Ah, agents! You gotta have one to be a professional actor. But when do you get one? Most youngsters believe that if they can just get an agent, they will magically become the next lead in the Twilight series or on Disney. Not so of course. When preparing for an acting career, getting an agent is pretty far down the list. First you have to have lots of acting experience. Amateur plays are a great place to get that. And then a couple of indie films and/or extra jobs is a good idea. Then you need some training. I don't think a talented actor needs to do two or three or four years at a conservatory or a college, but it is a good idea to have a few acting classes on your resume, including at least one from a highly respected studio, But you still are not quite ready for an agent. You still need a great head shot. You can make your own, but it will have to be pretty darned good. Then you need business cards and personal post cards so you can start networking, because networking is one way to get an agent. Well, you are just about ready for the agent now. But go at it in a sensible way. You have to live withing an hour or two travel time from the agency so you can get there for auditions. Your agent should be SAG or AEA or AFTRA franchised and a member ot ATA (The Association of Talent Agents). Then,. following the advice of Brian O'Neil in Acting as a Business, you can start working on getting a talent agent.
This whole process probably will take a couple of years or so. But you don't want to get in a big hurry to be an actor, because that is how people get scammed. Acting is a tough business, you have to go about it corectly to even have a chance. Take your time. Get ready for an agent before you try to get one. Then when the agent gets you an audition there is a chance you may get the part.