I've been watching the Driver61 videos on YouTube while at the gym which is nice as they're fairly short and reiterate good tips to keep in mind to progress -
https://www.youtube.com/channel/UCtb...EpwUQhFUyPQU9Q
Some of Ross Bently's podcasts had good tips but they never go in-depth as some of them are usually sales pitches for something. That "Physics of Racing" video was pretty good in comparison.