The default theme "Kubrick" is notorious in tweaking. Although it comes with WordPress it isn't meant for beginners. If you don't believe me do a quick search in Support forum.
This theme named [tag]Classical[/tag] that I'm working on was originally Kubrick. Now this doesn't look like it. The difficult part for beginners in Kubrick is the header image. The file functions.php isn't easy for beginners.
Now these difficult parts are gone.