The Art of Compost
Here is a useful chart from the Green Johanna handbook ( www.greenjohanna.se ). This is a composting bin which you can buy at a subsidised price courtesy Wiltshire Council.
Micro-organisms, which break down the waste, themselves need a balanced diet of one part carbon rich material to two parts nitrogen rich material. You will need to layer your compost to give the little chaps a chance to breed and munch up your waste: