1. Take your finished desk calendar and peel the backing paper off the plastic frame, removing any sticky residue if needed.
2. Push out the support leg and stand your device on it.
3. There is no step 3.
This works really well for a 7" tablet (Nook Color, Kindle Fire size) in landscape orientation, but would probably be unstable in portrait mode or with a larger device like an iPad. Works really well for phones, too.