This weekend I made a video aimed at people just getting into d3. I use a super simple bar graph to illustrate the fundamental principle of selections with d3. At 13 minutes it’s a little over the 10 minute goal I had, but significantly shorter than my last video!
I hope this is helpful to some. My plan is to make more of these so if you have any requests I’ll try to make a video to address confusing topics. The code is available here. :)