I am going through this book as an independent study and have run into an issue I do not know how to fix. I am on the subheading, Add data and create a bookmark, on page 61. It asks me to drag over the shape file named buildings.shp. I have checked in my file explorer and confirmed I do have this file, but for some reason, it is not showing up in the catalog pane at all. I would appreciate any ideas or solutions thank you for your help.