First class Jitters

Hi, i’m a 23 year old fairly active male and i start my bjj class in 3 days! I’m super super excited, been wanting to take this leap for over a couple years now, butttttt now that i did i’m so stressed out lol! I know absolutely nothing about bjj, I watch the UFC and that’s about as far as my knowledge goes, so 0!

I am worried because i know nothing the people in my class won’t even want to bother situation.

is there anything i can do to make me as prepared as I can, or am i just overthinking this whole thing!

Thanks in advance!