Infinity has 70 Mockups distributed around 5 Categories, so you may think "editing each one of them will be something tedious" and also "each one should have a tutorial", I have good news for you, All mockups included in Infinity are customized in the same way and it's really simple, consider the following points.
These mockups use Smart Objects, if you're not familiar with Smart Objects, you will definitely want to watch the following video to see how easy is to edit a mockup with your own design.
Layers are categorized in different colors depending on the types of functions they perform.
Layers are organized in folders and we have renamed each one.
Mupi Billboard Mockup - Infinity Bundle
This Mock-up is included within Infinity Bundle take a look the the complete set.