Analogue cameras are very easy to use and install. In fact they are virtually plug in and play technology. See diagram below:
All you do is connect the camera to an AV cable, red to red, white to white and yellow to yellow. On the viewing end, all you have to do is connect the yellow and white connectors to your TV. Plug in the 12v power supply at the TV end into the red connector. The power travels down the camera to the camera and the video and audio travels back through the cable to the TV.