I've been piling my grass clippings, leaves, etc, in a home made compost heap--it's a 4x3 rectangular pile with chicken wire fencing sides.
Anyway, long story short, a friend stopped by yesterday, saw it from 50' and said "you really ought to turn it, it looks matted".
This morning at about 9AM I went out, it was a 55*, damp and cold. I took my rake and started to pull up the top of the pile, and I was amazed to see the steam start rising up... I took off my gloves and held my hand near the pile, wow it was warm!
Sorry for getting excited, no question... just my "first time" with compost