Learning spared not exercise

From the learning approach to learn the keyboard through images and colors, I found the program well.
Sure you can learn best this way, the positions of the keyboard, but spared one that does not reach the practice by a certain writing speed and write security. And which one is not reached in just 4 to 6 hours.
Also playing the piano, it is not enough to know which button on which note is seated and you're Lang Lang.

However, these other exercises are missing on the program and I thought it was now just too expensive.