If you want to buy something online, you will need some things to know
. There are some places out there that will not send the right stuff. You might have trouble with exchanges or returns. Some places have big discounts and some don't. Some have an easy return policy some don't. I have found some places very good. They ship fast and no problems with returns. Some places have 24 hour cancellation policy. I like them because if you change your mind you can cancel.
Most of the stores online are trust worthy. They have pictures of what you are buying. The good websites will tell you if they have your have you're idem in stock and they will let you know if your product is available. I like that instead of waiting weeks to find out they were out of stock. Some have only certain sizes in stock and you have to wait.
The credit card company will not charge you until they get your approval that the items are in stock. I find it easy to purchase things online. If you make an online purchase with a credit card you have a full money back guarantee. If your not happy with your purchase. Also you might get a second idem for free just pay shipping and handling.
Don't worry about giving out your credit card number online it is safe. If you have problems with your purchase you can get a refund. There are so many people that are afraid of the internet. I have been doing this for over 30 years. It is safe. I do my banking online, pay bills, chat with people and make friends. I started when the World Wide Web first started back in the seventies. You have to be careful don't give out any personal information to anyone. You should not give out a password to anyone. Be aware there is a lot of Identity theft out there. Make sure if you are going to buy something you are in a secure area. After you are done with making your purchase, print out a receipt. Also put the web site in your favorites list so you can return to the web site. After you receive your product you might get an email to rate your product. If you give a good review you might get a discount on a new purchase. Most products have a web site that you can go to and activate your warrantee. That is easy online to do that.