Navigate to the Google Developers Console. From the top Project menu select Create project. Give your project a name, agree to the terms, then click Create. From the Google Developers Console Dashboard, select Enable API. If you don’t see this, select API Manager from the top-left “hamburger” menu. Under Google Apps APIs, select Calendar API. Then click Click Enable. Select Credentials under API Manager in the left-hand menu, click Create ..
Open Google Calendar using your Google account. Go to your calendars list Hover over the calendar you want to share and click the three vertical dots that appear to the right. On dropdown menu, click Settings and sharing. At the bottom of the next page, find the Calendar ID under the Integrate Calendar section. Copy the Calendar ID Login ..