Buying has never been easier in this day and age because you can do it from your computer safely, as long as you can provide a valid credit card number. You can buy a used car if you want but in this case, you should have it checked by a mechanic to make sure you are not getting a sour deal. To buy a laptop, you should know what your needs are and then shop around on the net until you find what you want at the lowest price possible. To buy books is even easier since shipping charges are very low and you want have to wait for long to receive it. To buy online used to worry people because they felt it was unsafe. It is a lot safer these days and more and more people are now doing it that way. To buy a computer is always a big deal. So you must shop around on the net, think of what's best for you and then have it shipped over to you directly.