Let's see... I have about 2 hours a day, 4 days a week, and one day when I pull about 5 hours. so between 10-15 hours a week. Plus, I'm taking O Chem, Physiology, and Genetics currently, so I get some extra practice when studying for those classes.
i started studying for the mcat the day after my third birthday... had my dad read me the kaplan stuff. it was too detail-oriented so we switched to barron's and he put the equations on a mobile above my crib... i love my dad.