learning how to type

backspace with pinky
, with middle finger
Ctrl preferably with the edge of your palm
Shift and Alt with knuckle of pinky
y with right index finger
x with middle finger
ad hoc combinations using {Shift,Alt,Ctrl} should be on the opposite side of the other key--in general, maximizing the distance between finger press positions.

>>5
There's a "scoreboard" of sorts of the speeds were way below that, ~20-50. I did a few more, best so far is 74. It's pretty addictive.