I was inspired to write this post due to some recent helping situations. I decided to compile all this information in one place. I may add to it later.
In order to have an excellent milk supply, it is important to remove milk from the breasts at least 8-10 times a day. (http://feedthebabyllc.com/care-plan-for-milk-supply/) When mom and baby are together, it is beneficial to keep baby skin-to-skin and allow free access to the breast. A baby is better at maintaining a milk supply than a pump and the extra nursing stimulates mom’s breasts to make more milk.
When mom is separated from baby, it is important to express milk as frequently as possible, at least every 3 hours from the beginning of one expression to the beginning of the next. A double electric pump with properly fitting flanges works the best. Be sure to check the membranes frequently and change them at least every 3 months. A pump that is older than 1 year may not be as efficient. See (http://newborns.stanford.edu/Breastfeeding/MaxProduction.html) for learning a technique that increases the amount of milk that can be expressed by 48%!