I personally really enjoy listening to the 7sage podcast. Lots of great interviews from past high scorers and broad-strokes LR strategies. Not an audiobook as per your post, but I highly recommend.
I second the suggestion for the 7Sage Podcast and Thinking LSAT Podcast. I listen to them all the time: they're both entertaining, free, and informative!
You may also want to check this podcast episode by JY:
https://soundcloud.com/user-737824810/15-scoring-preptests-the-right-way-to-better-predict-actual-lsat-scores
I loved the Podcast. Before the Podcast there were multiple interviews with high scorers on Youtube and watching those was what actually inspired me to join 7Sage in the first place.
I don't think anyone knows but I listened to this podcast about it: https://blog.spiveyconsulting.com/will-universities-colleges-and-law-school-campuses-be-open-in-fall-2020/
No webinar replays have been available, but a lot of people post notes on Reddit and such. Also LSAT Unplugged and the Powerscore LSAT podcast keep up with the webinars.