Sure. If you ask about something specific, I'd try to answer the best I can.

Hive is blockchain, it is a piece of code that runs as a backbone for everything we do here. There are many articles explaining it in a very simple way, those ones for instance:
@pitboy/what-is-hive-and-how-does-it-work-a-beginner-s-guide
@sidwrites/what-exactly-is-hive