Learning D3JS (data visualizations on the DOM with JavaScript, HTML, CSS) as part of playing with data things.
Here are some tutorials that I am following for this:
Introduction to D3.js by Curran Kelleher
https://www.youtube.com/watch?v=8jvoTV54nXw
D3 Tutorials by Scott Murray
http://alignedleft.com/tutorials/d3
SVG (MDN)
https://developer.mozilla.org/en-US/docs/Web/SVG