References available on real life room "tuning"?

Finding different ways to change or eliminate the problems isn't the problem at the moment. Determining what and where to do is. I thought with the incredible amount of desire for better audio there would be a mass of literature, and maybe even some websites dedicated to the subject.

I'll look up Get Better Sound and take a gander at it.

I can't get much more solid footing unless I redesign the Paradigm M7 bases. They're sitting on a brick fireplace hearth, about as solid as can be.
I think the room layout situation is horrible but it is what it has to be. Adding and moving things to improve certain areas will have to do. I notice no pictures posted on this forum so I'll guess it's a no-no? I'd post a pic of the room otherwise.