Hey there!
I wanna share my experience of Hogwarts Phonetics webinar. Start off, it's a pity that I couldn't have been one of the participants of this bona fide gem. Unfortunately I was busy during that day and watched the record of it later.
Lots of information was known, but some was new like the intrusive r.
The webinar is well-structured, all the materials are extremely useful. As I'm participating in Pronunciation Marathon right now, I didn't have much time to practice all the things covered. But as the PPT and the record stay with us for a long time, I know what I'm gonna do during my summer vacation ;)
Thank you Julia that you continue staying such a productive person and keep creating more and more new material.