i do not know anything. i learned how to do 2 digit multiplication a few days ago. i want to learn math and various things. i am willing to watch youtube videos. but i cannot seek out knowledge if i don't even know what knowledge i am missing. what is the correct way to build a mathematical foundation?

[spoiler:lit]t. 21 year old that missed out on the majority of their education because of mental issues[/spoiler:lit]