Salt meats the night before you cook them. Especially tougher cuts, but salt is good for all cuts.
Browning ground beef really means getting a sear on part of it, not just making it not pink. And split it into batches so that you don’t have all the water coming out and boiling the meat instead of searing it.
When baking, weigh ingredients. Most of cooking is art; baking is science.
I’ve frozen tortilla chips and they stay surprisingly crisp for months.
I can never use up cilantro quickly enough before it wilts, but it can be chopped and frozen in an ice cube tray with some water. When solid, pop them out and bag them in a Ziploc. I’ve also done this with chopped lemongrass.
Pesto sauce also freezes well.