How Much Opening Study Should I Do?

As a 1500+ player, does it make sense to learn one quality opening for white and play it every time, and a handful of openings for black in anticipation of what an

Opening Tier List in Progress(Your thoughts on the ranking based on theoretical strength) : r/chess

New version of Chess Opening Graph with ALL suggestions from Reddit implemented + publicly available on PyPI! More suggestions welcome! : r/ chess

Stolen memes from reddit - Schrödinger's pawn opening. It's e4 AND d4 until black responds.

Fighting Annoying Jobava London System!!

How many openings do you actually use? - Chess Forums

A chess bot I was playing against did the bong cloud opening : r/HikaruNakamura

Cracking the Chess Code: A Groundbreaking Study Reveals Hidden Patterns in Openings

8 Chess Openings You Must Learn if You Care About Improving

Is there anyway to punish this queen opening?? It seems like it's