Creating your syllabus through Google Calendar is very useful. You can share it out with students and share it with your colleagues. I loved being able to have my assignments attached in the description, so I didn't have to look up what numbers I assigned for that section.
One thing not mentioned in the video is how to share the calendar to your students. It is very simple, click on the 3 dots on the calendar and go to Settings. Scroll down to Integrate Calendar and copy the Public URL to this calendar link. And then share that out to the students.