It's tricky...especially in a tiny coop.
Eave venting is best with large roof overhangs.
You may have to damper vents on the inside if drafts blow hard enough to literally 'ruffle feathers'...I use cardboard to redirect drafts.
Putting vent/window on coop wall under run roof will be good too.
That link is OK..this thread might be more useful tho.
http://www.backyardchickens.com/t/1048597/ventilated-but-free-of-drafts
Nothing written in stone about
how to ventilate, except that it's very important, as each coop is very different.