I do freelance work as a Unity developer, and a few months ago I realized that many clients were looking for people with AR and VR skills.
So I decided to start with AR (since you don't need to buy a headset to get started). But I found the AR ecosystem to be very overwhelming (AR Foundation, MARS, AR Kit, AR Core, Vuforia, Web AR, 8th Wall – uhhh, so what do I learn??), and I think a couple of people on this subreddit had similar experiences.
It gradually got more familiar over time though. So I wrote a quick blog post about how to choose the right starting point for you, and how to learn it effectively. You can read it here:
https://jasont.co/get-started-in-ar/
I hope you find it valuable! 🙏