How many bottles do I need? Advice on breastfeeding!

Isabel • Anything can happen
So I plan on breast feeding my second baby, I used supplements with my first for the first two months then went straight on formula which I felt super bad because I was red to breastfeed her yet I got really frustrated seeing her cry because I wasn't producing enough milk? Or so I thought! I do regret it just because I know it's 100 times better than that crappy formula anyways, so this time I really want to breastfeed only and was wondering how many bottles do I need and any advice on it? How to store my milk and what not and how to produce sufficient milk for my baby?