A couple weeks ago I gave my first recorded talk at the Microsoft Edge Web Summit! I spoke about CSS Grid, which our team is bringing to public builds in October 2017. The talk is introductory-level, basically going through how we got to Grid, how the bulk of the properties and property values work, and how you might consider integrating it into your workflow. You can watch it here.
My coworker Greg Whitworth touches more on the history of Grid in his talk where he explains how we figure out what to build on the browser platform team, so that’ll be a great companion talk to watch!