I wouldn't say I know very many laws. I happen to know a few relevant to my fields of interest. They are memorable to me because they state complex ideas in brief, understandable ways. Rather than trying to learn a bunch of laws for the sake of knowing laws, look to your field for the important ideas and you'll often discover that someone has written formulated a "law". Most folks know Murphy's law, a general one, perhaps Occam's razor, and there's also Sturgeon's law and Godwin's law. In computer science you have Conway's Law, Brooks' Law, and Moore's law.

You probably already know quite a few laws, just not that they have names. "Power tends to corrupt; absolute power corrupts absolutely", and "Any sufficiently advanced technology is indistinguishable from magic" come to mind.