Definitely not that deep! I would say those formulas/complex math are not things Stock Unlock believes are necessary for 99% of people to learn.

Surprisingly, most people don't understand price ratios, whats each line of a financial report means (i.e. operating cash flow vs investing cash flow). So you can maybe label it "investing 101", "Intelligent Investor" type stuff.

Can you give more info on fitting volatility curves?

Lookup the term Implied Volatility Surface, it is a visualisation of an option's volatility and value across time (usually derived from black-scholes I think, assuming european style options, american ones use others like binomial). Find a decent textbook on quantitative finance related to options and derivatives (as in actual mathematical modeling, not candlestick horoscopes), they would be able to explain it better.