Digital photography has become very popular. Consumers will pay more for something they can have now. A digital photo can be downloaded immediately. Another advantage is that you can take one picture and sell it several times. You can make a lot of money doing this as long as you know how to sell them. You will have a lot of options as to what you can take pictures of. Again, you have to know what people are looking for. You need to know the laws regarding the pictures.
You can sell digital photography on a website that you create. Unless you know a lot about creating a website, you should probably hire someone to do this for you. Your customers won't come back if they have problems getting their picture. There are websites, call microstock agencies, that you can upload your picture to and have it for sale also. You may have to pay them a percentage of the sale or possibly just a monthly or yearly fee to use their site.
There is no set price on photos. It depends on the quality of the photo and what is popular at the time. You wouldn't want to try selling a Christmas picture at Easter time. If it is a really good picture, you can sell it for more than what you would sell one that is not perfect. Not everybody is looking for a perfectly centered picture or something fancy. If you find some unique to photograph, it might be able to be sold at a higher price if it is popular. Just remember that something is only worth what another person will pay for it. One thing to remember is that since it is a digital picture, you can edit it. If it's not perfectly centered, you can cut part of it off. If you catch something on the edge of the picture that isn't supposed to be in the photo, you can take it off. It is very easy to edit your mistakes.
You can take pictures of flowers or trees. You could also take pictures of wildlife, such as birds or deer. Some people will allow you to take the picture, but make sure you have their permission before you post it for sale. You could take pictures of boats or cars. There are endless possibilities. More than likely, if you find something that you would like a picture of; there will be someone else who would like a picture of it also. You can sell them as clipart or wallpaper.
You should also set up a paypal account. A lot of people use paypal. With paypal, you can also accept credit cards from people. You also will have a record of everything that you sell for tax purposes. Even though it is online, you still have to report your earnings. Depending on where you are located, you may need to get a sales tax license so that you can charge sales tax.