How does OpenTopography work?

Hi all! Looking for a DEM using LiDAR of a pretty remote place. I actually have a DEM that was taken specifically for our project but long story short, I don’t have access to it currently. I was on OpenTopography and I truthfully don’t understand this tool at all. I bulk downloaded NASA’s GEDI hoping I would find what I need and downloaded all folders as a zip file. Where do I go from here? I really would appreciate any feedback!