In Illustrator, you can design patterns, complex graphics and work with type. You can learn to design printables fast with the Basic Printable Design Course from Printable Crush. Illustrator is a highly in-depth program, so taking a course is a quick way to learn the basics.
Handing out physical flyers is still a tried-and-true advertising technique that works for all kinds of businesses. From real estate to fashion, you'll find several customizable designs for a variety of needs.