After struggling to install and customize the Branford Magazine WP theme (which I love), I wrote a how-to ebook, Sites that Soar!
The book is 56+ pages long and illustrated with lots of screenshots. (I'm an artist, not a programmer. Visual explanations are vital for me to understand how to do something.)
It's also useful if you're installing and customizing Mimbo.
But, I also have a free website (using Branford Magazine, of course) that shares some WP tips, as well as other marketing and site design info.