If you are making a first person game, you could attach the camera to a "dummy" object that will represent the person's eyes and attach the dummy to the player character. To make a FP game, you usually need to have some collision detection software. The built-in collision detection doesn't work for complex objects, so you will need to get something like "Sparky's".
How much programming experience do you have? The answer to this question will determine how detailed *we* will have to be when explaining the "how to".
The fastest code is the code never written.