When at rest the typist's fingers are positioned, lightly, on the ,A -,S -,D -,F keys for the left hand, and the J-K-L-; keys for the right hand.

The left index finger will control the ,F and ,G keys, the right index finger will control the J and H keys.
The left middle finger will control the D key, the right middle finger will control the K key.
The left ring finger will control the ,S key, the right ring finger will control the L key.
The left little finger will control the ,A key, the right little finger will control the ; key.
The spacebar is controlled by the right thumb.