Doin weed for first time?

Okay im 14 years old and yes i know im young. Im doing it for the first time this weekend with some homies. I just want to know what to expect. Its weed from my friend grows in his closet and idk if its good ****. So yea i want to know if i would get high the first time, and if so how high? He gave me a small amount to try myself so i could get used to inhaling the stuff. I might do it tonight so i could know what to expect saturday. So what will it feel like the first time and if i get high in the first place? My brother said that since its my first time i could get buzzed faster. But idk so anyone help?