While some people move into a house and buy all the furniture for each room in one go, most of us can’t afford to do this. Generally, people save up and add to the furniture in the room piece by piece. In a bedroom, you might buy a bed first, then a wardrobe, then a chest of drawers or perhaps in a completely different order.
The key with this approach is to either know what you’re likely to be buying in the future or to only buy those items which are adaptable and would fit in with different kinds of decor. If you buy a gothic bed or a particularly contemporary one, you are likely to narrow the field in terms of what else you can buy. Conversely, buy a wooden or metal bed of fairly classic design and you’ve got room for manoeuvre.
The latter approach is more advisable. Look for simple, timeless designs. Anything fussy and over-embellished is likely to date quickly, whereas designs that could have come from any era have already proven themselves. You don’t need to compromise on style. You just need to ensure you get something subtle that isn’t too overbearing.