I'm a fan of Open Source and have a growing interest in serverless and edge computing. I'm not a big fan of spiders, but they're doing good work eating bugs. I also stream on Twitch.
Service Workers. I know what they are and even have it baked into my blog care of Gatsby, but I'd really like to get a deeper understanding of them and the best way to do that is from a Google Sponsored course, i.e. free, of Dave Geddes's, Service Workies.
In no particular order:
Consider Using TypeScript
Nick Taylor
He also has some other great courses