David Sanders gave a detailed Julia tutorial at SciPy 2014, which is a great starting point for a new Julia user. Also download the relevant IJulia notebooks that are used in the tutorial.
JuliaCon 2014 featured a number of talks on various aspects of Julia and its development. Slides and IJulia notebooks are on Github.
A set of video tutorials were recorded at MIT in January 2013. Slides and other materials from the tutorial are on GitHub.