1.)  I added a layer, but the layer does not appear in the viewer in ArcMap.

2.)  I add a new layers, and the layer has a red exclamation point next to it.

3.)  I added a layer into the viewer, and got the error message "The following data source(s) you added are
      missing spatial reference information.  This data can be drawn in ArcMap, but cannot be projected."

4.)  I added two layers into the viewer that are supposed to overlay, but instead the layers are very far apart in
      the viewer.

5.)  I added two layers into the viewer that are supposed to overlay, but the layers appear to be slightly off.

6.)  I want to do some geoprocessing on the computers in Barclay classroom, but the tools don't appear to be
      available in ArcMap/ArcCatalog.