Extreme Exposure: Pushing the Limits of Aperture and Shutter Speed for High-Impact Photography written by David Nightingale. If you love photography, then you should check out this book: it goes over all the elements of exposure. And once you understand what your aperture can do and the results of different shutter speeds, then you can really tweak your photos - in some cases, to the extreme.
The book starts off with the basics about exposure: the equipment that you need (besides your camera), how to read a histogram, ISO and exposure value. The author then explains depth of field and how you can control it by choosing the aperture. And then shutter and how you can drastically change the look of your photos by your choice of shutter. Excellent photo examples are given and the author shares which camera body, lens, f-stop, shutter and ISO was used for each example (which I love - that information always helps me really understand the photo).
Of course, getting out of auto-mode and going full manual is the best way to go - learn by experience, and before you know it, you'll be a pro at exposure. However, this is a great book to guide photographers along, whether you are an amateur or a pro. Just trying out some of these techniques, that push us a bit out of our comfort zone, will only make us better photographers. And there will be some pretty cool images to show for the attempt, too!