Right now I've only learned the home row on the Dvorak layout. For QWERTY keyboards, the home row is "ASDFG HJKL;", but for Dvorak the layout is "AOEUI DHTNS". My typing speed is just a little above 20 WPM, but it continues to increase each day. I'm probably going to start on the second lesson today.
It's amazing what having the right tool for the job can do!