If developing a logo, proficient use of the Pen tool is essential. Logos need to be flexible enough to be printed onto a business card, a billboard, or even sewn onto a shirt. Vectors are the best way to go for such a task, and the Pen tool is the best way to create those vectors. The Paths panel becomes highly important when wrangling several paths to create an intricate network. Each subpath can be assigned a mode (through the Options bar: Add, Subtract) for how it interacts with the other subpaths. You’ll find this is an easy way to add and subtract paths to form the final artwork.