These keys sit at the top of the keyboard and are labeled F1 to F12 on standard keyboards and F13, F14 and higher on extended keyboards. Like their counterparts in the Windows world, Mac keyboards have function keys. The table below shows some example shortcuts with a translation.
You'll see these symbols in menus across all applications, so they're not specific to Excel. There really aren't too many symbols, so I recommend that you bite the bullet and memorize them. The Mac Finder – abbreviations appear in all applications, not just Excel
For example, the Command key is abbreviated as ⌘, the Control key with ⌃, and the option key as ⌥. These symbols have a long history on the Mac, and you'll find them in menus everywhere. One of more confusing aspects of keyboard shortcuts on the Mac are the symbols you'll see for certain keys. Also see: Excel shortcuts on the Mac // 3 minute video 1.