This morning I read a short book by Sayadaw U Silananda called No Inner Core: An Introduction to the Doctrine of ANATTA (available for free in PDF format here). Anatta (e.g. no-self or no-soul) is a teaching of the Buddha that is often misunderstood, and U Silananda does a spectacular job clearing up some common misconceptions. The book is a quick read, and I highly recommend it.
U Silananda teaches the Burmese Theravada style of Buddhism, so his views differ from some of the more well known forms of Buddhism in American (i.e. Zen/Ch’an, Tibetan). He in no way attempts to refute or belittle any other Buddhist traditions, so I think this book is accessible for the general Buddhist community, not just those of the Theravada tradition.