1. If you want to buy books online, you'll get yourself a better deal if you get them used. Based on the condition you receive them in, you may just end up paying a few cents plus shipping. Make sure you read the description of the book to see if there are any damages you should be aware of.
2. To help protect your credit, use only one credit card for online purchases. This will help you quickly track your spending habits when the credit card statement comes in the mail. If you notice any charges that you did not make, call the credit card company immediately and report it to them.
4. Read customer testimonials before you buy anything. People are more than pleased to complain about bad service online, so look for sites and testimonials which are terrible so you are aware what you're getting into. You should take bad reviews with a grain of salt, but if you see many, you know there is a problem.
5. Before buying from the new online retailer, do some research on them. Check online reviews from other customers to see the way it handles stuff like customer service, shipping, and its overall buying experience. You can also check the BBB to see if it has any disputes and whether those disputes were resolved professionally. Try contacting the company via email and phone number, if it's posted to ask questions on its business before you buy anything.