Google Sites is a tool for creating and publishing websites. It is free, entirely online and very easy to use, no experience required in web development, it is easy as making a word document.
How do you Create a website?
Sign in to Google Sites with your Google Account.
Click New Google Sites.
Click on the 'plus' button located on the bottom right, to create a new site.
Now a blank webpage will appear, you can now edit the website to your liking.
Once, you're done editing click Publish.
Now a popup will appear asking you to enter your desired web address.
Once done, click Publish.
Now you have successfully created a website!
How do you add a calendar?
Go to the page on your Google Site you would like to add the calendar.
On the sidebar, click on the Insert menu
Under the Google Embeds section click on Calendar.
You should see the list of all your calendars here.
Click on the calendar you wish to insert and click Select.
Now you can resize and move your calendar to your liking!