The next step up in creating your Video Security System, and securing your home or business, is to use a packaged system, which includes the DVR for recording the video, as well as several cameras.  These can be found at TigerDirect, or many other spy camera stores.  

These systems can include just a few cameras, to many.  Some of the cameras can have varying features, such as low light capability, motion detection, black and white, and color.

Software can be used to record and view the video.

Some systems include the capability to tie into your system over the internet.  This will give you full control over the system, as you were sitting in front of the monitor at your home.  You will need internet access, and the ability to plug an ethernet cable into the system.