1. Make a sketch of the surveillance area with planned camera locations indicated.
2. Take photos of the areas you want covered from the proposed camera locations.
3. Determine the resolution you need. (Do you want to see a person's face or a car license plate?)
4. Determine the potential of vandalism.
5. What type of ambeint lighting is available during the time you want the camera operational?
6. What are your budget restrictions? As with all things in life, the better cameras are more expensive, but please keep in mind the following: A low cost camera is better than no camera especially when used in conjunction with our Dummy cameras. 

What is the difference between surveillance camera systems and security camera systems?

According to Webster's, surveillance is close and continuous observation and security is precautions taken to guard against crime, attack, sabotage, espionage, etc.

Surveillance camera systems are usually the first line of detection/protection. They are usually under manned systems with their signals being fed into a  recorder or numerous monitors watched by one person. They usually have a fixed focal point.

Security systems are the second line of defense/protection. Security camera systems are usually better manned than surveillance systems. Security cameras usually have a variable focal point allowing the operator to 'zoom'. PTZ security cameras allow the operator to Pan, Tilt, and Zoom.