You add more vegetable waste and paper and let the worms do their magic. You don't need to take anything out. Your main job is to make sure that the whole thing is as moist as a wrung out sponge (NOT soggy), check to see when the food's going and add more (not before.) The most common newbie mistake is feeding too much and ending up with anaerobic conditions. stinky.

It's a little harder to tell when they need more food if you're only giving them coffee grounds. Many of us feed about twice a week. After a while, you'll figure out how much they need. Things are always really slow in the beginning, but they pick up after a few weeks.

Your other main job is to make sure that enough air can get into the mix. Worms don't eat the food. They eat the bacteria that are eating the food and they only like the ones that depend on oxygen. I shred my paper, fluff it, soak it for a minute, and then fluff it again before putting it in the bin a few inches thick to cover any food. I also have lots of 1/2 inch holes on the bottom. Don't worry, the worms won't get out. They'll stick their heads out and say 'too dry, no food' and go back in. If they do try to get out en mass (not just one or two poor misguided ones), then something wrong with the conditions in the bin. Usually it's not enough air or too much food.

There's lots of info on this site if you check the older posts. Two other starting points with explanations on how to set up and care for a bin are http://wiki.vermicomposters.com/wormbin/Main_Page and redwormcomposting.com

Welcome to our world. A word of caution. It can get a little addictive!

Ok thanks for the info.

Dirt is not supposed to be a significant part of a worm bin. Some people say to add a handful for the grit, but even this is not necessary. Don't be adding a lot of dirt!
mbetts