OK
The starter jet controls the choke and almost never needs to be changed from what came with the carb.
The idle/pilot jet controls the throttle from stop to 1/8th throttle. The little brass screw on the side of the carb fine tunes this jet. Turn the screw in to lean the mix and turn it out to richen the mix.
The needle controls the mix from 1/8 throttle to 3/4 throttle.
Finally the main jet controls the mix from 3/4 throttle to WOT.
Just tune for what works. Other people's bikes are only a base for tuning. You have to tune for what your bike likes, not other people's bikes.