Help With Graphics and Templates with Headway Theme/Wordpress

Help needed please.

I've accumulated a number of paid and free graphics downloads i.e. squeeze and mini-site templates, and graphs like headers, footers, arrows, etc.

What I would like to know, with details if possible, is how do I add these graphics and templates to a page in Headway? How would I use the templates to create the pages? Simple graphics and templates for mini-sites and squeeze pages.

For most of these graphics I have the css, photoshop, image and font files.

I'm aware that for the squeeze and mini-site templates I have to add my own content but I'm not sure what is the most efficient way to do so.

I'm working on a mac and use iworks' pages, kompozer, textwrangler, and CS5, but I'm a neophyte with CS5 and PS..

Any assistance, direction, "go to this site" info. that you think can help would be greatly appreciated.

I should say that it's really important to me to learn how to do this myself. I'm a writer/creative type, but once I understand the technical stuff I got it. So if this requires custom css I'm determined to learn what I have to.

Thanks so much.

Brian