If you are interested in purchasing a camera, then the obvious question is what type to get. There are so many different styles to choose from and the first question to ask yourself is what is your budget. From basic point and shoots to more advanced SLR cameras, there are price points below a hundred dollars, up to spending thousands to get the perfect camera. ref: http://www.lifestyleportrait.com
Pixels used to be a concern, but these days almost all cameras are 10 megapixals or more. So the images will be quite crisp and can easily be used to print large photos or more. Next comes features. From basic to more advanced, you can select what ever camera you want for photography. Some have advanced lens, others have basic lens.
Aperture features must also be considered, from F stops to speed settings depending on the scene you are planning on capturing.