How can i tell my boyfriend what feels good?

Whenever my bf is me, he gets VERY close and doesnt realize how close he has come. I have a problem with vocalizing these kinds of things...so how can i show (or some LITTLE words i can say) him what feels good? And also, he didnt know about the , so i told him about that and he doesnt know where it is...how do i 'show' or tell him where it is without just like ripping my pants off?? And trying to be a bit sensual whilst doing it?