Even tought I can make decent art in photoshop, I'm no master of the digital art, theirs only 2 brush type I use.
-Basic brush (with all the different Opacity, hardness level)
-Dry media Brush (with all the different Opacity, hardness Level)
that's about it.. actually, brushes won't make you better in art or make your art look better, brushes are simply short cuts.... now that you know, I hope this answers your question