The way you strike the keys of your piano is very important. To enable easy and uniform movement on the piano, you have to use the correct fingering. Especially when you want to solo over a song or even play chords.
We would take the key of C for an example:
C D E F G A B C
d r m f s l t d
The fingering for the left hand is
5 4 3 5 4 3 2 1
d r m f s l t d
The fingering for the right hand is
1 2 3 1 2 3 4 5
d r m f s l t d
Lesson 1: Introduction to the Piano
Lesson 2: Brief Introduction to music
Lesson 3: Keys of the Piano
Lesson 4: Singing and playing on different keys
Lesson 5: Intervals
Lesson 6: Chromatic Scale
Lesson 7: Circle of Fifths and Fourths
Lesson 8: Key Signature
Lesson 10: Fingering for the chromatic scale
Lesson 11: Introduction to Chords
Lesson 13: Chord inversions