When first learning 3D art I always found it tricky to understand some of the more advanced UV layout techniques such as stacking and breaking out of the 0,1 UV space. I found that I was only ever being shown how to give assets their own unique textures, and could never figure out much more beyond that.
I find that a lot of other artists starting off feel the same way. Because of so I decided to create this; my new tutorial series on understanding these types of UV layouts. I've put it out there for free so all beginner/mid-level artists can check it out and hopefully get caught up on these topics.
Download links in the description of the video, enjoy :)