Since it is important that young babies learn to suck effectively,
La Leche League International
reccommends that you use these techniques step-by-step when you and your baby are learning. After a while, when both of you are breastfeeding experts, you can use whatever positions and procedures are comfortable for you.
You may find yourself breastfeeding in different positions at different feedings; this is just fine. Breastfeeding should be a comfortable and relaxing time for you and your baby.