MarketPress Issues with config

Hi all, MarketPress is giving me trouble too.
I choose an item, add to cart, then there is no "go to cart button"
1. I manually navigate to the cart, there is a css issue. There is no room for shipping details to be added (screenshot)
2. Then I hit "Continue to checkout" and there is nothing there (screenshot 2)
3. Then I get a paypal error (screenshot)

I'mnot saying there is errors with the pluig ore Im just having trouble with config
I need to ask, why is there no config instructions with these plugins?
I have had trouble with every plugin I have tried to use. (I am a newb though)
But still, Us newb need instructions.