Thank you for your reply. You know, I think I made a mistake by installing WooCommerce PLUGIN and then thinking it would be best to start with one of their free WooCommerce THEMES to go with it.
I guess I sort of assumed a lot of the functionality wouldn't be included in just the plugin. By "functionality," I'm referring to typical stuff like slideshows based on inventory or whatever.
Do you have any recommendations for CSS manipulation? Or do you mean just install the plugin and get to work inspecting the CSS with Firebug / Inspector?