The most important aspect of saving money can be buying in bulk, you almost always get a better deal when you buy lots in one go, if you have the space to store large amounts then that is great, if not, you may have to opt for smaller quantities. Either way, my only advice is to stick to things that don't perish if you are stocking up to make the most of your money. Think of things like paper goods, tooth paste, anything that can be stored in a cupboard really.