Myst 3: Exile is a puzzle game - it involves you looking carefully at the screen, listening to the sounds, and figuring out the solution to each set of puzzles that are presented to you. The puzzles are themed, and usually clues (and sometimes outright solutions) are left lying around for you, if you see them. Try to do your best to really look around before resorting to this walkthrough - the sense of accomplishment is far greater if you figure it out for yourself!