New keys·Middle fingers beside index. E and T — the two most common letters in English, one per hand.
WPM0
ACC—
DONE0%
eee ttt ete tet ete tet et
Left Middle
Dvorak lesson 2 of 20 — it practises E · T on a home row of A O E U · D H T N S, vowels under the left hand. By this point you're typing with 4 keys, accuracy before speed.