1. A good online shopping tip to remember is always to leave feedback after buying from a source you've never bought from before. This will help both of you because you'll remember whether you've enjoyed a good experience from them, and they will also acquire a reputation being a seller.
2. Read customer testimonials before you buy anything. People are more than pleased to complain about bad service online, so search for sites and testimonials which are terrible so that you know what you're getting into. You ought to take bad reviews using a grain of salt, but if you see many, you know you will find a problem.
3. Be careful when it comes to the online stores that you consider buying from. If the online store is poorly designed, filled with misspellings, and overall fishy, you should take your money elsewhere. These are signs that something might not be right about this store. It's safer to be safe than sorry.
4. If you're purchasing clothes or shoes online, be careful using 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.