Alot of Light blankets (receiving blankets)
Newborn and 0-3mth size onsies
A few packs of newborn diapers (not to much because once the cord falls off size 1 are better depending on babys size) and a ton of size 1 diapers and wipes
If breast feeding u dont need bottles or formula but if u arent buy a small supply of formula until you know which kind your baby likes (they may not respond well to some kinds)
Boppy pillows are amazing if you are brrast feeding i use mine all the time its not a necessity but i think its worth it!!
Baby shampoo and lotion and a few towels and wash cloths
If you have a crib no need for a bassinet (buy a few crib sheets so u arent having to wash all the time when baby messes one up)
The poster above said go on babys r us they do have a great list to help you a bunch of it isnt really necessitys but it will give u a good idea hope this helps good luck!
What I found helpful was creating an account on babies r us website. It helped me get an idea of what i needed. Really all you need are food, clothes, shelter (bed)