Hi Bing, I've been away but happy to help now I'm back.
Have you taken over from Armin? I got a booklet from him. He may have it on his computer or have one somewhere you can copy. If not, you are welcome to borrow mine - there is a library nearby where you can copy it in B&W or colour (expensive). 'Worms eat my garbage' is excellent, and very comprehensive. I believe there is some reference material at CRISP. Otherwise there's lots of info on the internet too.
My only problem with the excellent wooden wormeries available through CRISP is the plastic grille separating the compost from the drainage area. My worms nip in and out of the holes, which is fine when they're little'uns. When they get bigger, the holes are too small and the worms get stuck, sometimes tearing themselves in two to escape. Which is quite distressing. I have tried to remedy this by wrapping the grille in an old t-shirt, which works well until the shirt has itself been composted. Any other ideas?