1. If you're making an online purchase, don't hesitate to contact customer care if you have an issue. By contacting customer service before making your order, you'll discover how helpful customer support is and exactly how quickly they respond. This can be useful information to have in case something goes wrong after you've made your purchase.
2. If you find a great product on your own 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 make sure you can't have it cheaper from somewhere else. You might be able to save a few dollars this way.
3. Online shopping is a great way to find items that are out of stock at your local store. For instance, if you are unable to find a certain size of jeans at the store in your area, you can look on the store's website and find out if they are available to be shipped to you.
4. If you're purchasing clothes or shoes online, be careful using the sizing. Some items typically run smaller or larger than normal. Some shopping sites will advertise if an item runs true to size. If the site doesn't list anything about sizing, glance at the reviews. In most cases, if the item is running larger or smaller, the reviewers will let you know.
5. Be skeptical of overdoing it. It is much easier to overspend when you find yourself shopping online. You begin to rationalize that you can spend more for those shoes because you saved money on gas and the food you would have gotten if you went to the mall, for instance. Give yourself a limit and follow it.