Here is a very basic yet important DSLR camera simulator for beginners. This camera simulator gives you control of ISO, Aperture, Shutter Speed, Light conditions, Focal Length selection, distance from subject and tripod in a given scenario.
You can also choose between Aperture and Shutter priority modes as well as Manual Mode.
This is a very helpful tool for those who wants to learn photography but cannot afford to buy a camera.
Download and install the camera simulator from the given link.