Back in 2011 a division within the company I work for went Google. As part of the Service Desk team I was just managing Google Apps for the end users, years later I am now an IT Systems Engineer and I am managing the entire G Suite product for the entire company.
If you manage G Suite for a business I strongly recommend you to get this certification.
The training I took for the exam:
- IT Pro TV – https://itpro.tv/course-library/google-apps/
- G Suite Administrator Fundamentals (scroll down) – https://cloud.google.com/certification/gsuite-administrator?hl=th
- YouTube: https://www.youtube.com/user/AppsAdminTraining