Official guides for individual tasks in specific Google apps

https://support.google.com/drive/?hl=en#topic=14940

https://support.google.com/sites/?hl=en#topic=1689606

https://support.google.com/edu/classroom/?hl=en#topic=6020277

https://support.google.com/calendar/?hl=en#topic=6076998


https://support.google.com/docs/?hl=en#topic=2811805

https://support.google.com/groups/?hl=en#topic=9216