With the advent of exciting new technologies like HTML5 and CSS3, interactive design & development on the web is moving forward at a pace we barely could have imagined just a couple years ago. The appearance of new standards, the creation of new markets such as smart phones and touch screen devices, and the growth of the mobile internet all present opportunities to those working in this space, but also challenges. The CODEKIT series of sites and applications seeks to provide the knowledge and the tools needed to master these exciting new challenges, and emerge into a brave new world of the world wide web.