Then, a few years ago, DC Comics started several series of comics all under the heading of Before Watchmen, giving some origin material that fit into that world depicted in the original. I was interested, but with so many titles all at once, I decided to wait for the graphic novel publication. Later, I chose to wait for them in paperback.
So, they're starting to flood out now, and I read Before Watchmen: Minutemen * Silk Spectre, which dealt with the history of the early team of do-gooders, and then the beginning of the costume heroine. Even though the authors are different from those of Watchmen, I think that they pegged the feel of the original, and I found the work engaging. At this point there are three more graphic novels in the set; I don't actually know how many there will be, but I'm reading 'em.