1. Make sure to read all the information about any product you are considering purchasing. Just looking with a picture online can be deceiving sometimes. It can make a product look bigger or smaller than. Make sure to look at the description which means you know exactly what you are purchasing.
2. If you're concerned with whether a shopping site is legitimate or otherwise, do some research about this. The internet can be a great way to discover other people's experiences with different sites. If the reviews of others seem promising, consider making a small first order. This can allow you to test out the consumer service, shipping, and obtain a feel for the organization without risking a lot of money.
3. When you're shopping online you should be sure you know who you're buying from. If you're buying on an online auction site, only buy from people that have positive feedback. On other sites look to see if they are a reputable company by trying to find reviews upon them online.
5. If you're purchasing clothes or shoes online, be careful with all 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 an item is running larger or smaller, the reviewers will let you know.