I don't know of any good books, but there's lots of information here:
Incubating & Hatching Eggs Important Topic Index - Please Review
Tells you what to do, before and during incubation, during hatching and the sticky threads in the Raising Baby Chicks section will tell you what to do after...
If the hen get covered by the roo often her eggs will be fertile. She will lay an egg a day max, depending on a number of factors like breed, feeding, etc. If you leave the eggs she may decide to sit on them when she thinks she's got enough. Mine usually start sitting when they have 12 eggs in...