With 339 medal events spread across 41 sports, there’s a lot to learn about the Tokyo Games if you truly want to consider yourself an Olympic expert.

But never fear! NBCOlympics.com has you covered with crash courses in every sport that will be featured.

Maybe you’re curious about the four different strokes in swimming, or you’re wondering what that cool skateboarding term you heard means. Or perhaps you want to impress your friends by dropping interesting tidbits of Olympic history, such as how one particular wrestling match in 1912 lasted nearly 12 hours. It’s all in here — everything from the obvious to the obscure.

Just search the list below (sorted alphabetically) to find the detailed guide for whatever sport you’re longing to know more about. You’ll be an Olympic authority in no time.

Want to know more about the Tokyo Olympics in general? The rest of the Olympic 101 articles can be found below.