If you love photography, has good quality camera and can take professional quality pictures you can start your career as professional photographer or can make some extra money by selling digital photographs online.
Many sites are available online lookin for good quality photographs.
Make your account on any of the site, upload your photo graphs, once someone buy any of your photograph you will get your money in your paypal account through that website. They will deduct their commission from it.
There are also sites available who directly buy from people and sell them online. The better your expertise are the more money you can make.
If will not give you full time income support but still it is good extra money.