how can you tell where buds will eventually come out?

i'm doing my first grow ever and i'm about 30 days into it

how can you tell where the buds will eventually come out? i know it's from the center
of a leaf at the end of a branch, but... which ones? all of 'em? only some of 'em? the
ones higher up only? the ones up high, in the middle and down low? there's gotta be
some basic formula to know ahead of time

thanks for any help

You should get buds at each branch, and the main stem.