Save Selections
This is one of my favorite features when working with complex artwork. Selecting content in Illustrator can be a minor battle at times, and when you get the selection you need, why not save a shortcut to it for later use? After selecting content in your document, choose Select > Save Selection. Give the selection a name and click OK. Click the Select menu and it will appear at the bottom of the menu until you decide to remove it by choosing Select > Edit Selection.