I have been doing a lot of CSS Grid related writing over the last week. My first guides have gone up on the MDN website, getting ready for Grid to ship in Firefox. I've also been working on another project I will be talking about soon. I'm really looking forward to Grid actually being shipped in browsers, mostly because it will be interesting to see what people do with it in production.
More than just Grid stuff this week though. We have a nice navigation example, a walkthrough of proposed Level 4 selectors and some ideas for responsive patterns that aren't just creating a very tall site on mobile.