A notebook, also known as laptop, is a portable computer. Do you want to use it on the road? Choose a model with a special energy-saving 'mobile' processor, a good battery and a reasonably small display. This will allow you to work longer with the same battery and saves you the trouble of carrying around a large display that consumes a lot of precious battery power. Or will you be using you notebook mainly in places where you will have access to a power outlet? Then choose a desktop processor (more processing power for less money) and an ordinary battery. This will save you a lot of money, which you could then spend on a bigger screen. You'll work faster because you can view more information at once and it's great for multimedia