http://www.w3schools.com
http://www.w3schools.com/html
http://www.w3schools.com/html5
http://www.w3schools.com/css
http://www.w3schools.com/css3
http://www.codecademy.com/courses/html-one-o-one
http://www.sitepoint.com
http://ostatic.com/blog/essential-open-source-tools-for-web-developers
http://www.hongkiat.com/blog/tag/series-html5-css3-tuts
http://webplatform.org
http://learn.shayhowe.com/html-css
http://www.sitepoint.com/20-more-docs-guides-front-end-developers
https://www.hongkiat.com/blog/create-html-documents-on-the-fly/