This book is very good and I highly recommend it if you're just starting out. But I didn't feel like I really understood how d3 works until I read these two art

This book is very good and I highly recommend it if you're just starting out. But I didn't feel like I really understood how d3 works until I read these two articles by Mike Bostocks himself. http://bost.ocks.org/mike/selection/ http://bost.ocks.org/mike/selection/ http://bost.ocks.org/mike/join/ http://bost.ocks.org/mike/join/ IME, understanding joins and selections is essential when using d3.