How to finish MYST quickly
Flip up all marker switches. Then go to the main one (on the dock) and flip it down. Take the page and of to the library. Go to the book with the different codes and go to 158. Copy that down and go into the fire place! Push the red button. Now, punch in the code you copyed down. Push the red button. Open the book and go to the age of D'ni. Have a short talk with Atrus and then do what he says.
Congradulations, you have finished Myst(cheater)