Everyone is self taught. I/someone else can show you some tools, point to some of the obstacles, but at some point you have to do it for yourself.
Yes indeed, this does come off the back of being asked again what brushes I use in Painter. When I answered the response was a request for finer detail - what settings?
Perhaps a suggested goal should be to learn Painter so well that you don't have to ask which brushes a fellow artist uses. You will be able to tell by using your eyes?