I'm big on keyboard shortcuts, so I wanted to make one for opening the System Preferences on OS X.
Turns out it's really easy.
Just open up System Preferences – possibly the last time you'll ever do this without your new key combo.
Go to the Keyboard pref pane.
In the pill at top, click Keyboard Shortcuts.
Select Application Shortcuts from the left-hand menu, and then click the ✚ to add a new shortcut.
You must type in System Preferences…, with the trailing ellipsis character. You can either copy/paste it from here, or use
Option + ;.
Enter your shortcut, and you're done!
You'll notice that I used
Command + Option + , as it's a nice little twist on the
Command + , that most OS X applications use to open their preferences.