Hi everyone,
Here's a little guide on what I would consider easy and advanced shading. Softening shadows can be diffifult for beginners and it is very easy to mess up. So I would recommend anyone just starting out with rendering too leave everything hard (level 1) since it's easy and a stylized look. Once someone is more confident with softening edges, they will have an easier time going for a more realistic or painterly style.
Feel free to ask questions or request new art tip topics.
Thanks!
-CriKai