First, I would just try and get comfortable with your tablet and digital art program. It can be a bit intimidating at first. Focus on learning the basic tools: layers palette, how selections work. Navigator palette, brushes, flipping / turning your canvas. Next, I would determine what it is you want to do within digital art because that will help guide you as far as what to learn and your future goals. People can suggest good advice to you all day, but if you're not interested in that particular path, it might not be for you. One thing to note is that traditional skills can carry over to digital art, so you won't be starting from absolute zero. Try to think of digital art as just another medium to learn.
A great place to start is the art fundamentals. The key is not just knowing what these are but practicing them. Even advanced artists need to have a firm understanding of these. Most issues that arise in a drawing / painting can be improved by going back to these. https://www.youtube.com/watch?v=ax130yILbw0&list=PLVgLT-e3jXPDgeED0pD0BPq8kY1VAZAGa
Specific Lessons
Drawing https://drawabox.com/
Painting https://www.ctrlpaint.com/library
Principles of Animation https://www.youtube.com/watch?v=haa7n3UGyDc&list=PL-bOh8btec4CXd2ya1NmSKpi92U_l6ZJd