When I first tried to learn love2d, I started with this site. I found it very helpful at the time, but honestly I learned more about love2d by messing around with other frameworks/libraries. In between my first time trying to use love2d and now, I have made very small games in raylib(c), monogame(c#), pygame(python), pico8(lua) and godot. While they very different, they share a lot in common and some of the core concepts carry over. So I have been slowly learning over a span of about 2 years.
There is also a ton of useful info and examples on the wiki. It can be a little daunting if you are not used to reading those “the docs”, but after a while it became my starting point when I got stuck.