If your going to have a baby shower, I would wait until after to go shopping for baby. Baby showers can be life savers. If not, you'll need all the basics: crib, crib matress, diapers not too many newborn because they'll quickly hop into size 1's, wipes, onezies (0-3months), boppy pillow, bottle set, bibs, recieving blankets, baby blanket, baby socks, swing, travel system, play pin, changing station, baby bag, ziploc bags to keep things organized, & whatever else you can think of lol
Crib play pin bouncer swing car seat extra base if needed .. crib set gowns onsies socks mits booties caps burping clothes towels bibs bottles (dr browns good) nipples grooming kit detergents sanitizers diaper bag bottle sanitizer wipe warmer teethers pump if your breast feeding feeding pillow diapers wipes ointments lotions etc etc things at the top of my head.
Depends on what you mean by basics. You'll need onesies and pants/skirts and pajamas; a crib/cradle/bassinet and bedding; receiving blankets, burp cloths (cloth diapers work awesome), diapers, rash cream, clippers, nasal aspirator, socks, hats, a carseat, diaper bag... etc, etc, etc.