OK, I had some qualms as to whether or not this actually deserves the PIC 
notation.  But I does relate (trust me!) and so for better or worse, I did it.

I have a need to buy, and install, a multi-camera video surveillance system 
for a small business.  As part of this, I want to do some development 
work.  Trouble is, I do not know squat (that may be a strange term to our 
foreign friends, but it means "nothing") about video surveillance 
systems.  So in order to start, I need to bone up on just what all is 
involved.  My usual faithful guide, of course, is the Internet, but I have 
found a lot of information about a lot of different people who would just 
love to sell me a lot of different things.  The money is limited, and so I 
need to buy only what I need, which probably consists of several camera, a 
DVR (digital video recorder) and some sort of black box that lets the 
several cameras (probably four) go to the one DVR.  From those basics, when 
installed, will evolve the Pic connection.

Can anyone suggest reading material, or provide further info?

Thanks,
John  

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