This page is just a preview of an upcoming book, but I did learn a few small things. Hopefully the book will be even more useful.
This is one I did not know about, but will be sure to use many times in the future….
To expand the current panel or frame to fill the entire Application window, press ~ (the tilde key). This is useful for quickly expanding the Timeline when you are using the Graph Editor, or whenever you want a detailed view of a panel. Press ~ again to return to your previous arrangement.