[hex12648430]

If you're looking for Krita-specific resources I can recommend this course by David Revoy. It goes over pretty much everything there is to know about Krita and has been a huge help to me.

https://www.youtube.com/watch?v=hEAs-UMLB90

It's in French but you can enable English subtitles and those seem pretty good.

As for getting better as an artist in my opinion nothing beats just practicing a bit everyday and knowing what your tools can do for you. Having some knowledge about fundamentals like composition, balance and color harmonies will also help a lot. You can find a ton of tutorials about these subjects on youtube.

Edit: I just noticed that the second part of the course doesn't have any subtitles yet. It's a shame but it's probably still worth quickly scrolling through it to get an idea about what the software can do.