SEO

http://en.wikipedia.org/wiki/Search_engine_optimization

Site
http://www.seomark.co.uk/

Blog
https://moz.com/blog

Eminent
https://www.eminentseo.com/

Check
http://seositecheckup.com/

More
http://www.linkdex.com/blog/category/seo/
http://searchengineland.com/25-super-common-seo-mistakes-51888

Book
http://www.seobook.com/
http://www.weboptimist.com/pdf/SEO-101-book.pdf

Tube
https://www.youtube.com/results?search_query=seo