Guilin Bus Stations

There are 3 Bus stations in Guilin. Could you tell me which one I need to go?
Guilin Bus Station(main)
Guilin South bus station
Qintan Bus station

1) Guilin to Longsheng, Qintan bus station?
2) Guilin to Crown Cave, Which bus station?
3) Guiin to Yangdi, which bus station?

Too many bus stations, I am confused. help me.