Built-in shelving comes in many flavors: traditional, modern, DIY, modular. Here is a great tutorial that shows us how to take hardware store items and turn them into an industrial and minimalist shelving unit.
Kitchen or anywhere DIY. Seems simple enough, depending on your gap between shelves, anywhere from ropes to ropes for your spacing. You could even use wider wood, just adjust your rope length to accommodate your width and height of your shelves.