9 Steps that will Massively Boost Organic Visits to Your WP Blog
ED: Basic, but good primer/refresher. And it does have a few useful technical tips in there.
There are some things that you should keep in mind when assigning tags to headlines: Use H1 only once – for your main headline. The tags should follow a chronological order, and you should also try to include as many keywords as you can in the heading.”