1、One possible version：

Nowadays shopping online is more and more popular．I think shopping online is very convenient．You call buy anything online you want without leaving home．Shopping online will save much time．What's more，it's often in a low price．If you want to buy an MP4，you can look through the shopping website，type “MP4” on the website，you can find all kinds of MP4s．Then choose your favorite．What you must do is to fill in a form including your personal information，such as credit card number．name and address．Finally，click “Enter”．You'll get the MP4 by mail in a few days．Make sure the website is safe，or someone can steal your money and other things．Be careful that the MP4 you buy is in good quality．I hope you'll get a good one．