Well sorry I thought it would be easy enough, I shall not waste your time
Well, explaining a command is pretty much like explaining a program (which it actually is, just using a CLI).
One could give you a basic one liner that highlights the basic functionality, but that would often barely work or not work at all for your specific usecase, thats what manuals are for.
If you have a specific(!) question "I want this path, with these files, to this path, on this dataset. How would I go about that?" it might be faster to ask. But thats a specific question, your's is pretty vague "I have two folder, I need to move" and not knowing how MV works, also means you are, inter alia, asking for a bsd/cli/gnu basic-use tutorial...
So: It's not about "wasting" our time, it's more about wasting your own, ours and missing out on a great learning oppertunity ;-)