what do i need? swaddle, blankets, sleeping bag? 1st time mum & starting to panic!

Jenijosh • Back 2 Back Babies.... 💜💙
im trying to read up on what ill need for the moses basket, crib and i cant find anything useful as in how many sheets do i need? and what blankets? 
do they sleep with just one blanket over them at night with fitted sheet underneath?
when are swaddles/sleeping bags used?
I have chico next to me crib and a moses basket for downstairs. any tips from already mums? i dont have a clue!!! 30 weeks! any advice please.