u/Bright-Nerve-3417

Hello this probably isn’t the best subreddit for this (if not please remove) but I have a question. I don’t really know any more than basic 6-7th grade math It’s like I stopped paying attention one time and now I know nothing I should and I don’t know where to start on learning more. There’s so much to start with and it’s not like I can go back to middle school and learn it the way everyone else did. Are there any tutorials or websites I can use to help me learn more? I’m a fast learner so I shouldn’t need overly simplified explanations or tutorials.