title: How to interface with web XML/JSON APIs?
body: <p>I'm learning php/xml/json and everything else on my own and I was going through API's for certain things. They have documentations but I still don't get how API's work. They give you a GET link and API key, I know that you're supposed to put the API key inside the request link</p>
  
  <p>How do I call this link? And what does it mean when it gives you a sample response?</p>
  
  <p>Is the response supposed to come out if you got the request correct?</p>
  
  <p>I'm a bit clueluess?</p>
  
  <p>Thank you</p>