How do I control the appearance of the by-line, categories, and tags?

Hi Jeremy and other experts,

I am Linda’s husband and I am working with her on customizing the great Techozoic theme for our blog at biznology.com. I am a relative newbie to both Techozoic and WordPress. I am not a CSS expert either, but I usually know enough to be dangerous. This problem has me stumped. I’d like to have more control over the appearance of the author by-line, the category list, and the tag list at the top of the single-post page and at the top of the blog home page.

Usually I can grab a div (or span) class or ID and do what I need to, but the only HTML tag enclosing this whole section is , and it encloses every element, rather than any of them individually. I can’t see how I would be able to control the appearance with only CSS–would I need to modify the template (which I don’t know how to do) to add the appropriate div or span tags to then code the CSS I need? Or is there some Techozoic or WordPress setting/feature that I don’t know about that can come to my rescue?

Thanks for any help that can be provided.