Last night on MoChat we discussed getting started with expressions in After Effects. Adobe posted links off the bat for examples and basics. As far as the go-to & first learned expressions, loopOut() and wiggle() seemed to be the most common. For learning more about expressions, there is Harry Frank’s After Effects Expressions series, an FXPHD course taught by Harry as well, AE Enhancers, or a bonus chapter in Creating Motion Graphics. Keeping track of all those expressions we learn & write becomes a task over time. Some people use text documents, the Expression Toolbox script, or other programs like Codebox & Evernote. Of course, Adobe seems to be aware of this, too.