I'm finally going to have a worm bin that is EASY to use. I am not sure I agree with this website when it says that castings will drop down, though. I think you have to rotate the layers, harvesting the bottom each time.
Earthworms are amazing garden pals – and powerful composters. Learn how to harness their talents by vermicomposting, and start your own home DIY worm farm! http://gardenerspath.com/how-to/composting/worm-farming-vermiculture/
Earth Day activity: Make a worm compost bin. Tips for how to make one, What and what not to feed your worms, what to do with the resulting compost etc also there's a book I want to check into Worms Eat My Garbage, by Mary Appelhof;
FREE DOWNLOADABLE WORM FARM LABEL More
Worm Bin Troubleshooting - A Visual Guide to Diagnosing and Solving your Worm Composting Bin Problems #wormcomposting #vermicomposting
How to Start a Worm Farm for Profit via www.wikiHow.com http://www.wikihow.com/Start-a-Worm-Farm-for-Profit
How to Build a Worm Farm at Home (and Monetize it for Profit)