Baby Registry Help!

So I will be registering soon for my baby shower for my first child. Obviously I have so many questions and really good use some guidance from you mommas out there. Where to I begin with breastfeeding basics? What’s a good pump? (I know I have to call my insurance and see what’s covered or what I can get for an additional price) What type of bottles? What type of storage containers? What are you must have and what shouldn’t I worry about. Thank you so much in advance ❤️