Sorry for the ridiculous questions but im a ftm & I feel so lost alot of times what do you use for a…

Sorry for the ridiculous questions but im a ftm & I feel so lost alot of times what do you use for a hospital bag or overnight bag & do you also take the diaper bag as well like how big is a typical hospital bag/overnight bag & what does it look like & where can I buy one from??? If u have pictures that would be great😊