1. Look for the right times to shop online. Often the stores that you frequent will have online sales that follow a time pattern. Many, for instance, schedule sales for the beginning of the month or at the end. If you notice there's a pattern, hold off on buying anything until the upcoming sales period begins.
2. If you think that you will be making a lot of online purchases down the road, consider applying for a separate bank card to use just for these transactions. It is much easier to track all transactions should they be the only items listed with 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 find a great product on your 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 ensure that you can't get it cheaper from somewhere else. You might be able to save a few dollars that way.
4. Be wary of overdoing it. It is much easier to overspend when you find yourself shopping online. You begin to rationalize that you can spend more money for those shoes because you saved money on gas and the food you would have gotten should you went to the mall, for example. Give yourself a restriction and stick to it.
5. In case you have questions while shopping, choose a live chat function in the online store. Many big brands (and even some boutique stores) now have this functionality. You are able to chat immediately with a customer support representative to correct any issues or answer any questions before you purchase. That can give you a lot of reassurance.