Assalamu'alaikum. Hi guys!
I just uploaded a crash course tutorial on Youtube on how to draw an illustration using Krita 5.0. The video is almost 50 minutes long and discusses a lot of things, from the preparation stage, and various tips for optimizing Krita's performance, to the entire workflow of illustrating a turtle astronaut character.
Hopefully, this video can be useful for people who want to learn Krita from the very basics.