say you have the Pre-98 Bubba Kush clone. you would grow out a few clones. one of witch you will reverse to collect the pollen. then you will polinate the other Bubba clones that were not treated. after pollination then cut the pollen donor down like you would a regular male. those are considered S1s
when dealing with Fem genetics F1s do not come into play. say you bought a 10- pack of regular F1 beans. and you get 5 males and 5 females. ideally you want to selectively breed them so you use your best looking male to polly the best fem resulting in F2s grow them out and cross the F2 seeds resulting in F3s,4,5 ect.