Adobe Illustrator Basics Radial, Grid, and Mirror Repeats

I have a class calledSurface Design In Adobe Illustrator: A Beginner's Guide to Pattern Building, and in that class, I go over all of the essential tools that I regularly use to make patterns and illustrations within Illustrator. As time has gone by, however, I have noticed little nuggets of Illustrator know-how, if you will, whether it's a tool or feature that I forgot to cover or something new and valuable that I've learned and implemented into my practice since making the class. This has inspired me to start making bite-sized classes on all of those missing bits of Illustrator knowledge. This is the first of those mini-classes.