There is this really, really cool group of folks in my area - they're big on making food and consumables from scratch; they're called the From Scratch Club.
I proudly kept mine on our kitchen table and just today put them in the fridge so they would stop fermenting. I'll be trying to make my own sauerkraut soon.
Elissa passed along some great handouts with helpful books and some links to videos on the subject. If you're interested in learning more about fermenting, check out these clips:
A how-to ferment vegetables by Sandor Katz and Eat Real Food's Making Homemade Sauerkraut.
Thanks FSC and Saratoga Mama!