Where do I find my Google Font API Key? (Newbie)
Maybe the help page is a bit behind and refers to the 'old' console.
Old: https://code.google.com/apis/console/b/0/?noredirect
New: https://cloud.google.com/console?redirected=true
I wrote the Google Webfonts for Woo Framework plugin, found at http://wordpress.org/plugins/google-fonts-for-woo-framework/
For the last few versions, you do not need to use a Google API key to be up and running. The WordPress plugin contains a fallback list of all available Google webfonts, and I try to keep that list up-to-date as Google releases additional fonts.
So, unless there is a really new font you want to use, just run the plugin without an API key and it should provide all the Google Webfonts you want.