I start my first Jiu-Jitsu class on monday.

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Originally Posted by Destroyer

Be prepared to learn how to fall for awhile
Im not attaching your abilities, I’m just pretty sure that’s taught first

No, that's more of a judo thing. If he's going to a gym that offers both then that's great. Otherwise, day one is typically shrimping, guard, and if a self-defense focused gym maybe technical standups.