1. Never give out your Social Security number with an online merchant. This number is not required for placing orders online. Giving an online store your Social Security number can help them use your personal and private information to steal your identity. To prevent that, if you carry on an online store site and find out that being a requirement, usually do not buy everything from them and shop somewhere else.
2. If you think that you will be making a lot of online purchases down the road, consider trying to get a separate credit card to use just for these transactions. It is much easier to track all transactions should they be the only items listed on this card's transaction records. Additionally, you don't need to worry regarding your own funds being compromised, even temporarily, if you are a victim of fraud.
3. If you want to buy books online, you'll obtain a better deal if you get them used. Depending on the condition you receive 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.
4. When you are shopping on the web, make sure that you are just shopping on secure websites. Look in the website URL and it should display "https" as opposed to the usual "http" at the beginning. Usually have an updated copy of anti-virus running on your computer too. This will make sure that you have a safe online shopping experience.
5. If you are going to be doing some shopping online, make sure you be aware of the liability for each credit card you make use of online. Many credit cards have automatic fraud prevention built in while others offer it for any minimal fee. You do not want to get stuck with purchases made on the card when the number is stolen.