I use the 3rd edition (not on Good Reads for some reason) of Mary Schneider's text in my Community Health & Emergency Management graduate course. It is a solid overview of public health written in a very accessible style.

A good, easy, engaging read- first text book I didn't dread reading (except maybe the chapters on policy reform...).

I read parts of this book while I was volunteering on a planning committee on a college conference on the public health approach to suicide prevention on college campuses. Most people on the committee worked in public health while I knew very little about it. This book helped me get up to speed a little on public health in general.