I'd have been remiss in not recommending three terrific books.
The first, Growing Your Business with Google, by Dave Taylor, I've just finished reading and it is excellent. Taylor, who writes a highly regarded technology blog, column and many other things has spent the last decade developing the experience and insight for this book. And it shows. The book, whose title doesn't do justice to the content, is really about how companies can -- and will -- use search engines to maximize their business in the future. It provides a great deal of insight into how Google operates, how search engines find you and "promoting and growing your business online."
Taylor says, it's about visibility or how easily a company can be found or what he calls "findability". "On the Internet," says Taylor, "visibility revolves around the question of when people search for your product or service, do they find you or your competitors? How you achieve and use that findability is the essence of his new book.