I was shown how to use touch typing by my mother, but taught myself a different system on the teletype machine at school used to interface with the computer (pics are at my post on this thread.) The system I use involves the first two fingers of each hand for most keys and my thumbs for the space bar. The little fingers are used for the shift keys on either side. My technique is a bit like playing a piano in that there is no set key for a finger but it is instead based on the proximity of the fingers to the next keystroke needed.
This is exactly how I type. A cut above hunt-and-peck, sightless, but not nearly as refined (or efficient, if you analyzed it I'm sure) as home row touch typing. It seems to me like the most logical progression for self-taught typists who began with the two finger method before committing the key locations to muscle memory. By the time I took my first typing class in sixth grade computer lab, I had years worth of school assignments completed using my ramshackle method under my belt. That made overwriting anything difficult, especially as a stubborn preteen.