First off don't be sorry for asking questions here, that's the point! :)
Congrats on your new baby. How old is he/she?
Pumping: Do it as often as you need to and want to. You are right. You make more than baby can eat right now and you need to keep it, stored correctly. It is called Liquid Gold for a reason. :)
I used the Lasinoh bags and put it immediately in the freezer if I knew baby didn't need it. You can keep it in the refrigerator for up to 2 -3 days and then it NEEDS to be frozen. I kept the more recent bags in the top part of the freezer (of the refrigerator), but not in the door. I put them in a gallon sized freezer bag. Then I moved them to the chest freezer in the gallon sized freezer bags, toward the bottom. They can stay there for 8 - 9 months.
What you will find is that your body will even out the supply to baby's demand and you won't pump so much EXTRA as you are now. You'll want your supply later for when hubby leaves out your milk or you forget to put it away or when baby starts eating solids (you add your milk to the cereal). So now is the time to stock up!
It is totally normal for one side to produce more than the other and for your let-down to be more powerful on one side.
Engorgement will reduce once your body regulates to baby's needs. It won't be this way always. Once you get regulated about a week or so into it, you won't have this problem unless baby sleeps through a nursing session.
To relieve it, you can pump a little bit out to relieve pressure or get a warm washcloth and massage them, or even a cool pack if they feel hot.
Pump and dump is only for those who drink alcohol or take a medication that baby cannot or should not have. If you do decide to drink (I wouldn't recommend it), you should give baby your stored milk.
Try to limit your caffiene intake. I didn't notice much a of a difference with my girls with too much caffiene, but I also never had too much until they were much older (9 -12 months of age).
Some foods MAY affect your baby. I couldn't eat dark green veggies. That made them both so gassy.
Did you have a c-section or vaginal birth? Mine were both c-sections and I only bled for about 2 weeks, and spotted daily for about 3 more weeks. I've been told that with a c-section, they vacuum out much of the blood so there is typically less.
You didn't ask, but it could be 2 months to the entire time you breastfeed before you get your first period. You are able to become pregnant while you breastfeed, so you will want to use protection if you're not ready for another baby in 10 months. :)
Hope this was helpful!!! Congrats!!!!