I'm trying to find web sites with information about Bradbury's books. I'm looking for synopsis', covers and publishing information. Have found some, but they all have information on just a few books. With an author like Bradbury there must be some major sites out there.... or...?

Here's a start. It's a page with a pretty comprehensive Bibliography. Titles and dates.
http://www.fantasticfiction.co.uk/authors/Ray_Bradbury.htm

My apologies if you've already seen it.

I agree with you. There must be great sites out there, but so far, I have had to enter book titles, or Ray Bradbury and then sort through what I get. I'm more tied to the feel of the book and the author's text than I am to secondary sources; but recognize that secondary sources are very important.

I'm sure someone with broader web experience will have recommendations.