http://wordpress.org/extend/plugins/
Could be a good starting point
http://wordpress.org/extend/plugins/
Could be a good starting point
There is plenty of Facebook plug in that do this already. But there is so many that you need to take the one that fits your taste :D
It is now possible to post ads on your site. I do not know how you intended to use the theme, then I urge you to see this documentation in order to define the settings.