For drawing and digital painting, my go-to is usually Procreate on the IPad Pro with the Apple Pencil. It is very user friendly and is only about 10 bucks on the app store. I used to use Photoshop for a while with a Wacom tablet, but drawing directly on the screen is much easier for me, and gives me more control over my artwork. Procreate is missing some of the features Photoshop has, but Procreate works best for what I want to do. (plus it is easier to post drawings to Instagram from Procreate since you can't post on computer)