I used WW, the Knot, a little bit of Offbeat Bride, and a smidge of Google.
I deliberately stayed away from Pinterest and other sites like that, because I didn't want to feel like I had to have things a certain way. DH and I really tried to focus on what *we* liked, and then find something to help us achieve that. It helped.
I joined a group on Facebook called Wedding Resale Missouri so I could find good deals on used items in my area. I actually was able to get a lot of inspiration for my wedding from these ladies, more than usual Pinterest finds.