Whether you are just in the beginning stages of planning your wedding or knee deep into it, a great resource is The Knot. In the Bride's Room, we recommend their book. However, registering with The Knot website will also bring you a wealth of information as well as their Wedding 911 iPhone Application.
I registered myself so I can continue to be helpful to my clients. As the wedding photographer, I can't just be looking through the lens. I feel I have to see things from the bride's perspective as well. The Knot makes good and necessary reading for me and I think it will for you as well.