New blenderer here,
I have 2.9.1 and have downloaded https://blendswap.com/blend/20195, a free set of rock brushes. When I append the .blend file, it does not contain a brushes folder (it does have freestylelinestyle, image, light, material, mesh, object, scene, texture and world). I know there is supposed to be a brushes folder because when I first downloaded it, there was one.
I have downloaded the file again (twice) and reinstalled blender, but it can't find brush folders now in anything I download now, even different free brush sets.
And suggestions?
EDIT: just to close the loop on this in case someone else has the problem, I had to reinstall 2.8.2. The brushes folder would not appear in 2.8.3 or any version of 2.9