1. If you find an excellent product on the favorite site, search for it in a search engine before you buy it. Make note of the model number or brand, and do a quick search to successfully can't have it cheaper from somewhere else. You might be able to save a few dollars that way.
2. When shopping online, be sure the site you might be on begins with "https". The "S" implies that the site is secure, which entails that you can safely enter your personal information without having to worry about identity theft. If a site does not have the "S" in it, you might want to avoid using it.
3. Read customer testimonials before you buy anything. People are more than pleased to complain about bad service online, so try to find sites and testimonials which can be terrible so you are aware what you're getting into. You need to take bad reviews having a grain of salt, but if you see many, you know you will find a problem.
4. Make sure to read all the information about any product you are considering purchasing. Just looking with a picture online can be deceiving sometimes. It will make a product look bigger or smaller than. Make sure to read the description so you know exactly what you really are purchasing.
5. Before you start your internet shopping, be sure that you've got up-to-date antivirus software. Shopping online is a hotbed for suspect websites. Many people build stores with the goal to infect your computer with malware. It's best that you simply take precautions prior to visiting any stores, no matter how reputable you feel they may be.