I am in the process of getting a compost bin, and have lots of rotting apples rotting on the floor of the garden. I was wondering if it was ok to just chuck them into the compost bin. I imagine the bin will be swarming with fruit flies, but will there be any major problems? I was thinking about chopping them up or crushing them, before I throw them in. Is that worth doing? Any good tips on composting in general (other than don't throw all the grass clippings in) or links to useful websites? Are those tumbling bins any good? They are meant to be able to compost quicker.