The information provided consists of (where known):

• Brief instructions
• Cheat codes
• Gameplay hints
• Hacks to make the game work with a VGA display, or to run on a later version of DOS.

Meaning of technical stuff:

• CAD = Press Ctrl+Alt+Delete
• Reset = Press the reset button on the front of the computer. If your computer doesn't have the button, you'll have to power cycle it.
• FC /B byte = do FC /B between the original and modified programs; the address on the left is the one in the text. Or use a hex editor such as HxD.
• Debug byte = Use DEBUG.EXE to modify the program. Debug bytes are offset upwards by 0x100. So FC /B byte 75 = Debug byte 175.