Goodness! I started teaching my kids about budgeting and bills and stuff when they were old enough to understand. By the time they were in middle school they knew how to comparison shop, compute unit price vs whole price (like per oz of two different products similarly priced), compute the sales tax in their heads. By the time they were in high school, they know what taxes were, could approximate their net paychecks and could budget. As adults 2 of my 3 have always done a great job managing money. The third...well...anyway. I always saw my job as a parent to be time-limited. I had 18 years to teach them how to be adults. They learned about bank accounts, how to handle a checking account and debit card. How to budget their money to pay car payments, car insurance, registration, repairs.
So, honestly, I think maybe you're starting a bit late. Do you know about how to budget for rent, utilities, etc yet? Do you know how much it is to register a car where you live? What about comparison shopping for things like car insurance? Do you understand the different types of car insurance (liability only vs. full coverage)? Do you know what the legal limits are in your state? Do you know how to handle a bank account?