In Adobe Illustrator, you control the thickness and color of lines that you draw by setting stroke attributes. A stroke is the paint characteristics of a line or the outline of an object. A fill is the paint characteristics of the inside of an object. The default settings will let you see the objects you draw with a white fill and a black outline.
First you'll draw a series of rectangles and triangles that make up the pencil. You'll display Smart Guides to align your drawing.
Select the zoom tool () in the toolbox, and click in the middle of the window once or twice until you are zoomed in to 150%. (Notice that 150% ...