What skills should I look into learning to be more Frugal?

I’ll be starting college mid-fall and I want to learn some skills to be more Frugal and independent.

I can cook simple dishes, I can do video editing, I play Piano & Ukulele though sort of simply. I really only try to buy things onsale or in clearance. That or I will sort by unit price.

I’m already thinking of learning how to perform basic automotive maintenance and some renovation work on an old RV trailer this summer to build up some skills.

What would you all suggest?