1. In case you are shopping online, never give out your Social Security number. There is not any website that needs this number for you to make a purchase. If you are being asked for your Social Security number during checkout, you are probably on a scam website. Leave this site and discover one that has a better reputation.
2. Always save copies of your orders and receipts from online purchases. Many stores will redirect one to a page after you've submitted a purchase detailing anything that was bought, customer information, the prices, etc. You should either print a duplicate of this or save a duplicate to your computer in case any issues arise before the end of the return period. Be sure to save any emails about your items' status or correspondence with the company regarding your orders, too.
3. If you're purchasing clothes or shoes online, be careful with the sizing. Some items typically run smaller or bigger 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.
4. Many online shopping sites offer discounts if you use a "promotion code". These codes are easily found online simply by entering the words "coupon code" along with the manufacturer or name of the website you will be buying from. They may offer a percentage off or free shipping just by entering inside a simple code which can be easily found by investing a few minutes searching for it.
5. Be careful in regard to the online stores that you consider buying from. If the online store is poorly designed, full of misspellings, and overall fishy, you should take your money elsewhere. These are signs that something might not be right about this store. It's preferable to be safe than sorry.