I am just waking up in Seattle, which is why this issue is coming out an hour or so late. This is my least favourite timezone! I'm here for the CSS Working Group meeting, and I'll be sure to write up anything interesting coming out of the next few days.
It's great to see all of the excitement around the soon to land Grid Layout, if you have started to explore it and are finding things that you don't understand or can't achieve please do post them at my AMA. There is a link this week to one issue I looked into. Please don't worry about your question being "too basic". We are all learning how to use this - me too! I know the specification well, but there will be many use cases I've not come across. So please, share them with me and we can learn how to do interesting stuff and make the spec better in future.