There is lots of info available for self study, but it’s quite a jungle as KiCad improves pretty fast, which means that tutorials get out of date quickly.
In a few months time KiCad V6 is expected, which will again make a lot of tutorials feel outdated. Some people have difficulties with this, while others can more easily manage with some things working a bit differently, or finding buttons in other locations in menu’s.
The FAQ part of this website has quite a lot of text based tutorials and in-depth articles about KiCad. Among which is:
This forum is also quite active and there are a lot of friendly people here and questions are generally answered quite quickly.
But maybe this suits your style better:
https://www.udemy.com/course/kicad-like-a-pro-2e/