Cant find how to get the api key

been here
https://developers.facebook.com/docs/web/
and here
https://premium.wpmudev.org/forums/topic/how-to-make-a-facebook-app
Cant see a Create new app
and here https://developers.facebook.com/apps
and here
https://developers.facebook.com/docs/web/gettingstarted/
This is soooo complicated, I just wanted to put a facebook like button on my wordpress blog

not anywhere is there a get a key button or any logical further steps or I am missing something from somewhere?

Also when I went to facebook com I had to access apps through my personal page rather than the page I want to connect to via my wordpress site.

Site is: http://www.broomeandthekimberley.com.au/

Facebook page is: https://www.facebook.com/pages/Broome-and-the-Kimberley/135463466532051?ref=hl

Do I have to register as a developer .. so confused! (: