Can I make aol.com my default email reader in Mavericks instead of Mail? An AOL rep reset my Safari, and since then, whenever I hit commandI it brings up mail instead of italicizing words. How can I change back?
Assuming you already have the AOL mail installed on your system,

go to Apple Mail  (open it)- preferences

Select the Default mail reader to AOL.

The cmd i is standard Safari keyboard shortcut to open your default email (AOL) and to send the current webpage- nothing to do with AOL setting it up.