Currently there is a bug in the forum so that pictures are not shown. Not his fault that the picture is not showing.
Goto https://gettingstarted.mendixcloud.com/link/lecture/658/2.8.2-Importing-User-Stories and notice that in the top of that screen (the blue part on top) you can find and download the resource you need. They just switched the layout of these lectures and have not come around to adjust the text yet. It used to be in a seperate tab for each lecture.
The resources tab should be here: