Moneyness
Where an option's strike sits versus the current price: in-the-money (worth exercising now), at-the-money (right at the price) or out-of-the-money (no intrinsic value yet). It's shorthand for how much an option is really worth.
Where this is taught
Definitions are the trailer. These free levels turn Moneyness into something you play — one bite-size lesson, with worked examples, a quiz and XP.