So I'm 20, in the US (California to be exact), and I'm planning to (secretly) move out of my parents' house sooner or later. I have a plan and all that, but I'm a bit anxious since I know nothing about finance. I was never taught about it at school beyond some surface-level vocabulary words (no personal finance. Only like how econ is related to governments and all) and I grew up with a dad who thought he was being selfless by making sure I never had to think about money ever. Mix that in with some good ol' learning problems and I'm clueless about money

Here are some things I learned to give an example of what I mean when I imply I'm absolutely clueless:

• Apparently taxes will sometimes differ from each store I buy from. I have not learned how or why each store has a different percentage (I thought it was by state), just that it sometimes does
• Also, groceries don't have taxes, but they tend to cost more than the pre-packaged stuff
• Speaking of taxes, apparently if you make enough for them you can completely ruin your parents' taxes if you forget to communicate with them. Luckily, I didn't have to learn this the hard way, but I suddenly realized why people who were keeping their jobs a secret from their parents were concerned about making too much
• Credit cards are like a loan that you are forced to pay monthly. I legitimately thought the money was directly transferred from your bank account to the card, but no, it's from this storage in the bank that they have where they take your and everyone else's money and lend it to others
  • This was also why I was so confused as to why the banks collapsed right before the Great Depression
• A lot of things only take credit cards. For example, paying a house via cash is literally impossible, which is why you need to rely on a bank (to my disappointment). In fact, living bankless will only cause more problems than it does save money
• I figured out what a lease was. No one taught me that and I never sought to learn it until I was asking for apartment rooms

I'm lucky in that I'm not paying any sort of bills or insurance, and that I'm still reliant on my parents for that. However, I really want to get away from them, even though I would be tied to my parents' insurance plans and all. (I don't think they will ever kick me out of them, no matter what I do.) I don't want to be thrust into something that's difficult to reverse, so for those of you who are older and know what you're doing, is there any finance advice you recommend? What should I expect money-wise when I move out? What has been a regretful decision you've made and what has worked for you?

Resources are also nice, though I'm wary of books that are only found online and thus, I need to pay to see what's inside.