Instruction Booklet
Instructions, also known as an Instruction booklet, is a booklet that explains how to build the set. Each LEGO set includes a booklet.
Mistakes in Instruction booklets
Sometimes The LEGO Group make errors when they make instructions, for example in the instructions for 8096 Emperor Palpatine's Shuttle there is a mistake in Booklet 1 (as shown in the picture on the right) as the blue box shows that only one red blade and one hilt is required in this step, however, in the yellow box it shows that you need two red blades and two hilts for this step.