I learned everything I know on a platform called Skillshare where many artists/teachers share their classes full of tips and tricks. They are very good quality and quite easy to follow.
Here is a link to 1 month of Skillshare for free: https://skl.sh/3CHwR44
It is an affiliate link, meaning that if you ever get a paid subscription I get a month free as well, not bad right? One month should be enough to get the basics and get up and running. For the most part you will learn by doing and by making mistakes.
My recommendations go to: