Firefox OS
Abusing your Geeksphone to make the Internet of Things – Only recently I discovered and seriously enjoyed :-)) Jan Jongboom’s presentation at JSConf EU 2014 of JanOS:
HTML5 App Basics - Offline Functionality – Great screencast by @codepo8 for the App Basics for FirefoxOS screencast series.
HTML5 Mobile Development Workflow done right – In this 3 minute video Dave Camp @campd, Director of Engineering for the Firefox Developer Tools, gives a sneak peek into the Firefox OS App Manager: