Links

Google AdWords Training: https://www.google.com/partners/#p_adwordscertification

PPC Adventures: http://blog.whoopapp.com/category/ppc-adventures/

Search Engine Land: http://searchengineland.com/

Moz: https://moz.com/

Search Engine Watch: https://searchenginewatch.com/

QuickSprout: https://www.quicksprout.com/