After taking piano lessons for most of our anguished childhood, we realized one of the most effective ways to increase finger dexterity and speed was simply to play scales. Over and over and over and over again. While churning them out an infinite number of times is tres boring (especially because we could have been at the mall with our friends watching Mulan), scales are vital for becoming a good piano player.
Watch this tutorial to learn how to play the basic C major scale. The C scale is the foundation for a great majority of songs, from classical to pop.