- [HTML5 Boilerplate explanations and suggestions of header tags](http://html5boilerplate.com/docs/head-Tips/) - [Dublic Core Meta Tags](http://www.seoconsultants.com/meta-tags/dublin/) - [Apple Meta Tags](http://developer.apple.com/safari/library/documentation/appleapplications/reference/safarihtmlref/articles/metatags.html) - [OpenGraph Meta Tags](http://opengraphprotocol.org/) - [Link Tag Meaning](http://intertwingly.net/wiki/pie/LinkTagMeaning) - [Google Chrome HTML5 Tags](http://www.html5rocks.com/)