The delete anchor point tool deletes anchor points from paths (pretty self-explanatory, I know). You would use this tool if you needed to add an extra curve or angle to your shape, without having to fully redraw it. Once you’ve added the new anchor point to your path, use the direct selection tool and/or the anchor point tool to manipulate it into the curve or angle you want to create. The add actor point tool allows you to click in the middle of an existing path to add an extra anchor point to your shape or line. I use the pen tool every single time I open Illustrator, so if there is any tool to master, it’s definitely this one! - Add Anchor Point Tool (+) This tool takes some practice, but once you have it down, you will be able to draw freaking awesome vector illustrations.
By connecting several anchor points with this tool, you can create unique, hand drawn vector shapes. This Illustrator tool allows you to click in your workspace to create anchor points. By clicking and dragging these anchor points, you can maneuver their “handles”, which give your paths curvature and shape.
The pen tool is probably the most important tool of the entire program.