The instruction booklet that comes with every power tool and describes proper operation, care, and maintenance of that tool. Always read and understand the manual before you attempt to use any tool. If you are unsure of the safe and proper set-up, be smart: Look it up in the tool's manual.

a manual usually accompanying a technical device and explaining how to install or operate it

an easy tool to leant about your camera

a teaching tool

An instruction manual, in the context of computer and video games, is a booklet that instructs the player on how to play the game, gives descriptions of the controls and their effects, and shows a general outline of the concepts and goals of the game. It is also common for manuals to contain a brief summary of the storyline of the game, especially in games with complex storylines, such as role playing games. Manuals can be very large, such as the hundreds of pages for Civilization II, or very small, such as the single sheet of double sided A5 paper included with Half-Life 2.