Xbox 360 3rd Person Character

So, I've tried everything I can think of to get this to work right and nothing is working the way I want it to. It's all doing weird things that it's not suppose to do. I'm working on a 3rd person using a Rigidbody, if that is a good idea, and I want the Left Joystick on my Xbox 360 Controller to control the players movement and rotation. For example, I push the joystick to the left and the player faces left and moves left, when I push right the player turns right and moves right, and when I push the joystick back I want the player to rotate around and walk forward but backwards. Basically, I just want the player to stay on the X-Axis the entire time and rotate on Y. I've done it with a keyboard but for a Xbox controller I'm not sure exactly how to do that. Any ideas? (If using a Rigidbody is a bad thing for this let me know). I also want to add a camera that rotates around the player but doesn't affect the rotation of the player.