Help first time mom

I'm about to give birth soon and plan on going to work at four to six weeks post partum will be breastfeeding during but afterwards mostly pump how much should I pump how many oz bottles or freezer bags will I need? When should I pump and store? How long is freezer milk good for how much will baby need or drink? Just if you guys have general advice I'm a first time mother everything is brand new to me

Thanks sorry for not knowing!

I wanted to know if I work eight hours do I pump at work? How much milk storage do I need how many times will baby be fed? If I put my child in daycare single mom how do I get the milk ready for them to use? How do I explain to my job the breastfeeding needing a breastfeeding room and a refrigerator or freezer? There's women's laws but I'm not sure just general information on pumping and breastfeeding