TechTalks are a great way to share knowledge and start exchanges with other developers (and people in general). I’ve mostly been doing TechTalks and smaller discussion rounds internally at JustWatch but sometimes I do them in public, too. I once did an Angular Crash Course at my back-then university TU Berlin and spontaneously recycled my Styles talk for JSCraftCamp in Munich.
You’ll find most of my slides here: https://slides.com/herrherrmann
They’re usually easy to understand even without hearing the actual talk. And please let me know if you have any comments or feedback!