title: Getting started with GraphicsMagick
body: <p>I find the (C) API to be very complicated, there are many functions which sound like that they are doing the same thing. The relationship between blob&lt;->image&lt;->registry&lt;->streams> confuses me.</p>
  
  <p>Has anyone found tutorials or can otherwise shed light on what the fundamental concepts of GraphicsMagick are? A few typical workflows like "if you want to work with an image in memory, you can do [...], then to write it to disk, do [...]"</p>
  
  <p>Simple tasks like this are hard.</p>