Maze One is a dark maze with grey brick walls. The monsters roaming this maze are:
Stan.
Ralph.
Fraud.
Jailor.
You simply get out of this maze like how you would in any maze, figure it out. The easiest way is to find the mirror. If you find the mirror, you turn right, then stick to the left wall. No I mean actually stick to the left wall. And eventually you will find the entrance to The Green Maze.

If the button that opens the entrance to the Green Maze is red, just wait for it to turn green, then it will finally open.