1. If you want to buy books online, you'll get yourself 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 read the description of the book to see if you can find any damages you should be aware of.
2. Do not forget to comparison shop when you are looking for things online. People usually accomplish this when shopping in physical stores, but they don't think about it on the web. If you go for the first sale you see, there exists a chance you will miss out on an improved deal elsewhere.
4. If you're making an online purchase, don't hesitate to contact customer support if you have a question. By contacting customer service before you make your order, you'll find out how helpful customer care is and how quickly they respond. This really is useful information to have in case something goes completely wrong after you've made your purchase.
5. Before going shopping at any online retailer, do a quick search for promotional codes. Lots of the big retailers often have promotions running which are not advertised on their own home page. Doing a quick look for these codes will allow you to insert the code at checkout to save money.