It is my opinion that people are more important than search engines when marketing your content. It's true, though, that there are lots of things you can and cannot do to try and improve your success with search engines regarding the number of visitors that they send you.
You can read enormous technical books written by greatly esteemed gurus on the subject, but consider this: search engine companies invest vast fortunes in their systems; they do this so that they can present to their users interesting, useful, and (here's the big one) appropriate content based on the search their user performs.
Therefore, by understanding your customer, your business, and your product niche, you will achieve far more than by using any trick or secret that can be shared in a book. The important questions for us now are, how well do we understand our customers and which keywords and search terms will our customers use?