Custom single Product page noob help

Hi all i don’t know a lot about coding so ..

I’ve installed marketpress premium, i just need a single product page for all the products and a list page. I don’t like the basic style

http://goo.gl/BRPgj

How i can have a better look style, and how to insert a pop up cart option and all the cool stuff :disappointed: ? (Maybe easy way ^^ ) thanks!