The text balloons at the anime girl screen of vol. 11 are usage instructions. It's designed for a mouse but you can fake it with the keyboard using the arrow keys to move, Space as button 1, and Return as button 2. To run a program, move the pointer over it and double-click (press the spacebar twice). To exit back to the menu, press Shift + Break (Break is not mapped to a key in the driver by default).