Most technical books that are wide circulation competently handle beginner stuff. As do the common photography mags (although these get horrendously repetitive once you know the basics and aren't of much interest to anyone who isn't a novice). Once you know what your camera does and how it does it, I recommend getting Michael Freeman's "Perfect Exposure". This is a fantastic, easy-to-read, book that covers some of the more complex or nuanced technical considerations. It goes beyond the often inappropriate "rules of thumb" and quick-fixes that you get in beginners texts, and gives you the intellectual toolkit to solve exposure problems for yourself rather than getting frustrated with "rules". It really gave me a few genuine "ah-ha!" moments when I was starting out. However, it assumes prior confidence in the basics.