You know that photoshop whiz kid friend of yours? The one that plays his keyboard like a Steinway as he dodges and burns his way to photographic perfection?
That could be you.
Be the pinball wizard. But for Photoshop (or Aperture, Final Cut Pro, Pro Tools, After Effects, or Logic Pro)!
You wouldn't learn how to type on a keyboard with no letters on it, why try to learn keyboard shortcuts without the shortcuts right on your keys?