You have a choice of three types of videos:
Tutorials are videos that provide detailed guidance on installation and setup. They will take you through the process step by step.
Upgrade videos feature new modifications that enhance the function of the base hardware – usually to solve a hardware limit. They often also provide tutorial like details for you to replicate the upgrade process on your system.
Reviews are more focused on overviews of upgrades rather than being dedicated tutorials. They often check multiple products or ideas or systems and consider how they fit together.