These activities have been created to allow you to put into practice the skills listed under each skill level. The only way to become proficient in the use of Google is to actually put it into regular use.
Open your personal calendar and create events for reoccurring events during your school day (i.e. TBT meetings, team meetings, etc). Be sure to set reminders for these events.
Create a new calendar to use with a partner teacher or team of teachers. Add your reoccurring meetings to this calendar and invite your colleges to the meeting. Practice scheduling an event and see if you can find a free time on someone else's calendar for the event that they are available as well.
Create a list of things you need to accomplish this week and add them to the Task section of Calendar.