Starting off

Hey everyone, I’m looking to get into LEGO investing/selling but haven’t started yet. I’m trying to learn as much as possible before buying my first sets. I’d really appreciate advice on things like: Where do you usually sell sets? (eBay, Facebook Marketplace, BrickLink, etc.) How do you choose which sets to buy before retirement? What mistakes should beginners avoid? Any tips, resources, or things you wish you knew when starting would help a lot. Thanks! submitted by /u/Smooth_Ad_1510 ...