new guy who lost a bet

hello horse people. I got my self in a bit of a situation . around a month ago I started college and made some new friends one of these friends made a bet with me . due to the large amount of English exchange students at my campus I made bet with my friend that if the queen died we would get Friday off now it doesn’t matter what I would have gotten if i were to have won because well ... I didn’t . now you see the reason I’m speaking to all of you is due to the fact I lost the bet . in turn my friend got to choose a club that i have to join she chose the equestrian team due to the fact that i'm a man and only wore sandals to school . now i will say I'm not totally blind when it comes to horses i grew up in Montauk NY right next to where the Hampton Classic is held so i know some basic things . terms like "green" 'geldings" as-well as some maneuvers such as "posting" and " 2 point" what im wondering is what i need to know now that I’m on the team stuff like what attire i will need , what things i need to know and honestly what not to say now that I'm one of you .

thank you for your time have a nice day