To toggle which categories you would like to see, click the small triangle in the top-right corner of the calendar below.
Once you have selected which calendars you want to see, click the +GoogleCalendar logo at the bottom-right corner. You will be prompted to login to your Google Account, and your selected calendars will sync to your Google account.
Also, many of these events have volunteer opportunities available. Want to signup? Go to this link: https://app.betterimpact.com/Login/Volunteer.