Not updated and anymore, the content of the app might be old or obsolete!

A great app to learn how to earn money.

resources:

moz.com

yoast.com

seo.qalebfa.ir

hamyarwp.com

www.irhostco.com

www.searchengineland.com

www.sitepoint.com

www.stateofdigital.com

seo-hacker.com

websitehelpers.com

searchenginewatch.com

www.tipsandtricks-hq.com

academy.hubspot.com

blog.hubspot.com

blog.kissmetrics.com

support.google.com

smashingmagazine.com

www.google-penalty.com

www.bruceclay.com

blog.crazyegg.com

graphpaperpress.com

toprankblog.com

wordtracker.com