When creating websites you have several solutions to obtain and use pictures. You can take them yourself with your phone, you can hire a professional photographer, you can even go on well known on-line repositories and buy them. There is an additional solution, you can use websites that offers pictures for free. I'm specially fond of Pixabay, i feel their search is very intuitive and accurate. The amount of pictures available is over 330 000 which will cover most of user needs.

Be sure to take a look at it: http://pixabay.com/en/