How to do my own taxes. From my first part time job I have been doing my own taxes, even now with the bulk of my stash in taxable accounts, I do my own taxes, once you know the basics, it is not so daunting to learn about the extra codes that apply to you.
Also, to regularly balance your check book, which in today's world, for me at least, has translated to updating YNAB on a monthly basis. I remember the monthly ritual of mom sitting at the kitchen table with a stack of receipts, her checkbook and the old Hilroy brand student notebook she used to keep the finances in.
Unfortunately, she also taught me that if you see something you like and you have the money, just buy it. My dad was earning a defined benefit pension, and an inheritance so my parents never put two thoughts into retirement savings, so never talked of saving at all.
Another thing that I learned from her that I aspire to emulate but haven't been successful is meal planning and pantry maintenance. My mom had a master pantry list, that for the monthly big shop, she would have one of us (6) kids do the inventory and make the shopping list from the master, awesomely effective.