Miguel Grenbergs’ Flask Mega-Tutorial and book helped me understand using Python's Flask microframework. Well, somewhat. My understanding would improve if I used it more. Haven't taken advantage of the opportunity yet. Anyways - of course I decided to back his Kickstarter for updating the Flask Mega-Tutorial.
His blog post about the Kickstarter reminded me that he was doing this. I'm pushing it here because I know he creates great learning material. Oh and because I still feel a little bad about sending him so many questions during the “rough cuts” phase of the Flask book. Further endorsement: he was unfailingly polite and helpful responding to those questions.