Not sure exactly how to warm up before practicing piano? Check out Robert Estrin's video and my series of musician stretches.
6 Steps to Self-Regulated Practicing
Music Practicing Tip - The Random Spot Drill
Using the Circle of Fifths to Practice Technique
White-Out on Music? Why Not?
This is a nifty tip I learned from my colleague, RCM examiner Colleen Athparia: If you keep coming to a dead halt at the barline, get rid of the barlines!