Do you know about "wire styles"? Do you know what the colors mean? Do you know what a "thin" wire, a "thick" wire, and a "thicker wire with a white center" (so it looks like a doubled thin wire) represents? You should have learned this in a very early "Introduction to LabVIEW" lesson.
Have you done any computer programming? Or math? Do you know the difference between a number (a.k.a. a "scalar") and a 1-D array (a.k.a. a "vector")? If not, pay attention to these concepts when you review the material that RavensFan recommended.