Your phrase is referring to a
a safe place for babies to sleep.
It seems to be implied that this is their first baby: taking prenatal classes, baby proofing, and also assembling various infrastructure to await the arrival of the baby: diaper changing station, crib, various accessories to go with the crib, bottle warmer, bouncer / rockers, diapers, wipes, bottles, steriliser, baby monitor.
Anyone with kids will tell you it can be daunting.
Baby cribs, like adult beds, by their very nature usually do not come preassembled.
Because of their inherent size they are usually flat packed and need to be assembled. Various choices also exist for mattresses, canopies, mobiles, rectangular or oval shape, on rollers or stationary, etc...