I've used Google Maps API in the past and published a KML file using html.
However, I've been learning about customizing Google Maps using javascript (I'm new to JS - total beginner) using this tutorial: https://code.tutsplus.com/courses/custom-interactive-maps-with-the-google-maps-api
What I'm wondering is if anyone can explain how to incorporate the KML file into a customized map using the approach described in the tutorial. The source files are accessible here: https://github.com/tutsplus/google-maps-api
Thanks in advance for your help.