I'm not looking for the basic answers of "just watch a video" or "just read about its spells" or "just play in it". Who among you has gone through all of those methods and found something optimal that takes the least amount of time and still works.
I used to go through a process of turning every single spell caught by DBM (basically all of them that can be predicted) into weakaura warnings which might be unnecessary however: that process teaches very good info very fast.