Ajax
Ajax: A New Approach to Web Applications
Jesse James Garrett
http://adaptivepath.org/ideas/ajax-new-approach-web-applications/
ajax tutorial for beginners
http://kaidez.com/ajax-tutorial/
Ajax Tutorial for Beginners: Part 1
http://www.codeproject.com/Articles/31155/Ajax-Tutorial-for-Beginners-Part
Ajax Tutorial for Beginners with XML & JSON: Part 2
http://www.codeproject.com/Articles/31271/Ajax-Tutorial-for-Beginners-with-XML-JSON-Part
XMLHttpRequest Demo
http://www.papermountain.org/demos/live/#
jQuery’s Ajax-Related Methods
https://learn.jquery.com/ajax/jquery-ajax-methods/
jQuery in Action, Third Edition
Bear Bibeault et al.
https://www.manning.com/books/jquery-in-action-third-edition
Responsive Design
Responsive Web Design
Ethan Marcotte
http://alistapart.com/article/responsive-web-design
A Flexible Grid
http://alistapart.com/d/responsive-web-design/ex/ex-site-flexible.html
Responsive Design Frameworks: Just Because You Can, Should You?
Jen Kramer
https://www.smashingmagazine.com/2014/02/responsive-design-frameworks-just-because-you-can-should-you/
Responsive Front-End Frameworks
Foundation
http://foundation.zurb.com
HTML5 Boilerplate
https://html5boilerplate.com
Amazium
http://www.amazium.co.uk
Skeleton
http://getskeleton.com
Golden Grid System
http://www.jonikorpi.com/golden-grid-system/
Frameless
http://www.jonikorpi.com/frameless/
Bootstrap
http://getbootstrap.com
Bootswatch - Theme Demos for Bootstrap
http://bootswatch.com
Working with Bootstrap
Getting stated with Bootstrap
http://getbootstrap.com/getting-started/
Grid Examples for Bootstrap
http://getbootstrap.com/examples/grid/
Theme Examples for Bootstrap
http://getbootstrap.com/examples/theme/
Navbar Examples for Bootstrap
http://getbootstrap.com/examples/navbar/
Get Started with Bootstrap
http://www.w3schools.com/bootstrap/bootstrap_get_started.asp
Why Bootstrap is a bad fit for WordPress Themes
Fränk Klein
https://themeshaper.com/2014/08/19/why-bootstrap-is-a-bad-fit-for-wordpress-themes/