1. Under the File menu on your spreadsheet, select “Publish to the Web.”
In the next window, click the blue "publish" button. When asked, "Are you sure…?" click OK.
Close the 'Publish to the web' window. Copy the URL for your Timeline from the browser's address bar. It should look something like this: https://docs.google.com/spreadsheets/d/1xuY4upIooEeszZ_lCmeNx24eSFWe0rHe9ZdqH2xqVNk/edit#gid=0
Disregard the URL that appears in the "publish to the web" window. It used to be used, but changes to Google mean that you'll get an error if you use it now.
2. Preview the link to make sure there's nothing missing. To preview, copy/paste your spreadsheet URL into the box on the Timeline JS website (Step 3) to generate your timeline.
3. When you are done with your timeline, send the embed code (located under Step 4) to Katy and she will post it on our course page. You can still continue to make edits to your spreadsheet. Any changes you make are automatically made to the published timeline.