Help a mommy to be!

So I'm new to this whole mommy thing.  Yup, totally clueless! A while back, I wrote about how overwhelmed I was. I'm doing better now but I'm still kinda clueless with some stuff.

We already have a ton of stuff for our baby girl, but it's the neccesity items we don't have...and that's where I'm lost. I picked out stuff at the store that looked good to me and registered for it, but not sure what is best. 

Bottles, pacifiers, swings, bouncers, breast pumps, etc, etc, ETC!

What are some must haves and any tips you can give me?