I started to do this exercise, signed into Google maps, went to My Maps and darn if I hadn't already created a map for my library. I don't remember doing it and it was only a month ago. Oh well, it's really easy. I guess I might as well add a picture of the building and add some more content. I do notice that now the outline of the building appears, pretty cool. I believe when I created the map all you could see were the streets, no buildings.
The map of where I work can be found HERE
This Thing was very easy. I just followed the step-by-step directions on Google Maps