abiogenesis - Good source that explains the evolution of single-celled organisms "from scratch"

From a more geology-oriented perspective:

Robert M Hazen (2007) - Genesis: The Scientific Quest for Life's Origins

Noam Lahav (1999)- Biogenesis: Theories of Life's Origin

J William Schopf (2001) - Cradle of Life

I have watched Hazen's nice "Origins of Life" DVD/Video Course. There he says that the Miller-Urey stuff has gotten less popular. Their atmosphere contains too much Nitrogen, Hydrogen and focuses on the water surface and the open water body.

More recent research points to a more CO₂-rich atmosphere, and that life evolved deeper in hot water at the bottom of the ocean.