Hi Gage - what version of the book are you using (I'm not sure if the 2.6 version is out yet)?
Anyway, I found this resources page for pre-2.6: Esri Press Book Resources | Getting to Know ArcGIS Pro, second edition
And this for 2.6: Esri Press Book Resources | Getting to Know ArcGIS Pro 2.6
Have you installed the data? Did you work successfully through other chapters and just aren't able to find Chapter 7 data?
I just ran through downloading 2.6 data and the default install location is C:\EsriPress\GTKAGPro
Is that where you installed your data?
Hi Gage, I help manage the exercise data for Esri Press Books. Looks like there might have been a temporary server issue. It seems to be downloading fine now, but email me if you run into any issues, firstname.lastname@example.org. Thanks, Craig