TIPS AND TRICKS: Some basic steps to achieve better heightmaps on substance designer
INLAND ARTS WORKSHOP: A lecture explaining how to create a cobblestone on Substance Designer, also to give a sense on how industry see's a texture artist nowadays.
TILING ROCK MATERIAL/TEXTURE: This tutorial was featured in polycount, here's the link: http://wiki.polycount.com/wiki/TilingRockWallBeyer