I've been out of school for a year and a half, and I already feel everything I've learned has dribbled out of my ears. My grammar has definitely slipped into retarded territory, and everything important from my personal finance classes has fled my memory. My diction is shrinking, and my sentence building skills are pitiful.
Most people's solution to this is to go to college, but that's expensive and stupid. Besides, I want to go to an online school for music (my top choice right now is Berklee Online, but it's also the only one I've researched). Again, it's too expensive right now, so my question is this: Are there any good apps or websites that either challenge my brain or do something to keep it from rotting while I'm in between educations? I used to be a really bright kid, but a year and a half of nothing but working at McDonald's has turned me into a typical millennial bum. pls help