This tutorial picks up where the previous variables to arrays tutorial left off, in that it takes the array code, demos that code then we set about converting the parallel array approach shown in the previous tutorial and we build a structure (TYPE) to hold each characters properties. Once the type has been defined that includes all the required properties, we then define a typed array that will house the collection of characters. Later in the video take a look at using typed lists also. So if your struggling with types this could be a good place to start.