Podcasting: Do It Yourself Guide by Todd Cochrane
I just finished reading this book. Overall it's a great jump start to podcasting. It has good coverage of basic recording technique without getting bogged down in semi-relevant technical detail.
The author identifes hardware and software that he's used and allways gives a high-end and a lower-end choice. (Though I wish he had covered more of the WHY he chose the various higher end solutions.
The book also serves as a great reference to sites and software, though the "publishing" aspect is only lightly covered in the book and is OpenSoure / PHP centric.
This book will be staying open on my desk for some time to come.