Questions from a beginner.

Hey guys, First off Im sorry of these questions are asked of this community often. I'm sure it gets annoying answering the same questions over and over.

So i have a background in traditional art. Drawing, painting, etc is nothing new to me. However im trying my hand at digital painting. I find it difficult to decide which brushes to use in photoshop cs6 to achieve the desired effects.

I started landscape painting first in photoshop. Can anyone point me in the right direction, books YouTube tutorials etc that may help with proper brushes or techniques that would help me become a better digital artist? Thanks for any help.