Ah, okay. I actually took calculus in 8th grade. I studied another two years past that, dropped out, and then later did a complete 180 and graduated with a literature degree.
I'm now over 40 and interested in relearning the math I learned long ago and pushing a bit further than I had before.
There’s also an intermediate number theory class that’s basically at the level of a college elementary NT course (one that does not assume abstract algebra), an Olympiad geometry class, and a group theory class. The first two do not have a text, the third has a text but you can’t get it without enrolling.
I'm now over 40 and interested in relearning the math I learned long ago and pushing a bit further than I had before.