First off, let me apologise for lack of technical knowledge (I'm a total noob). 
  
I wish to create a cctv system for my home, but am totally confused by it all. 
  
I want the system to be 4 cameras (IR)which will be wired and I want video to be saved to a DVR. 
  
So my question is....what items should be on my shopping list? 
  
Thanks in advance 
Helen