1. If you want to buy books online, you'll obtain a better deal if you get them used. Depending on the condition you obtain them in, you may just end up paying a few cents plus shipping. Make sure you go through the description of the book to see if you will find any damages you should be aware of.
2. Pay close attention for potential sales online starting around Wednesday. Many brick and mortar stores do sales on the weekends, and to compete, many internet retailers have moved their sales days up by several days. You can often find exceptional mid-week bargains with just a little online research.
3. When you are shopping on the web, you should only shop at reputable stores. If the store does not have a strong reputation, you may be asking for trouble. Many people have had their credit card and private information stolen from shopping on lower than reputable websites. Be careful and protect your private information.
4. Be sure that when you buy something online, you are aware of if the site is secure or not. You may not want your information being compromised in this day and age. Identity theft is quite common, and you also must protect your information at all cost so you wish to keep making purchases online.
5. Be suspicious of overdoing it. It is much easier to overspend when you find yourself shopping online. You start to rationalize that you can spend more money for those shoes because you saved money on gas and the food you would have gotten in the event you went to the mall, for instance. Give yourself a limit and stay with it.