TO USE AS A BREAST PUMP: Simply suction pump (see user manual) on one or both breasts and let the pump do the work for you as it draws milk out from your breast.
It is best used while breastfeeding your baby on one side and pumping on the other, because breastfeeding stimulates the Milk Ejection Reflex(MER) on both breasts as baby sucks on one. Take advantage of the MER by putting your breast pump on one breast as you breastfeed your precious little one on the other breast.