Display PayPal button on my site

I am using the Matala theme, with the latest version of WordPress that is on the GoDaddy site. (I think 3.5, but could be 3.4something). I downloaded and set up and activated this plugin, but now I can’t figure out how to get it onto my actual page of my website. Is there a way that the plugin converts to a widget that I can drag to a side bar? Or a way to insert the button onto a page?

http://wordpress.org/extend/plugins/paypal-express-checkout/