hub quests in gu fucking suck. im never gonna get even close to double digit rank. this is too hard

can someone help a retarded newfaggot? I wanted to play with randoms in mhgu and I found someone with the same hr and he was standing there waitng for me he had the quest. but I had no idea how to see what quest he had or how to join it the hub girl wasn't giving any useful info and I just left I didn't wanna waste his time being retarded