This is pretty old news by now, but Ben Wiggins did an AMA on the r/ultimate subreddit a few weeks ago. He has a wealth of information about college and club ultimate over the past decade, and is also interested in the pedagogy and dissemination of ultimate to new players. His answers were super informative, really helpful, and packed full of awesome tips and hints for new and old players. He wasn’t patronizing, super respectful and answered all the questions, even the hard ones; I’d nominate him for best (only?) r/ultimate AMA.
And now I sound like an informercial :D