Baby shopping?

Keri • Hey, my name is keri I am 20 years of age and this is my first time! this is not a mistake just the next chapter ♡
What do I need to buy for my babies arival in December-January. I have a bassinet and a few clothes but what else does my baby actually need? I plan to breast feed as well so I no I might need a pump. Feeling clueless...