Most bookcases can be split into two categories- Free standing bookcases can be freely moved around your home. These are a good solution for apartments or smaller spaces in the home, they come in many different styles and materials but the function will generally be to hold books or other small items. Wall mounted bookcases on the other hand tend to be much larger, and more permanent fixtures in your home. They can be tailored to suit your exact stylistic and functional needs, and offer a much wider range of possibilities than a traditional free standing bookcase. Many wall mounted bookcases offer additional features such as built in desks, lighting, tv stands and more.