1. Create a spreadsheet with the data for your chart using Google Sheets. Create four columns: date, data, caption title, and caption text.
2. Publish your spreadsheet. In the File menu, select "Publish to the Web," then copy the URL for the spreadsheet from the browser toolbar.
3. Paste the URL into the "Configure your Storyline" box at http://storyline.knightlab.com/, then click Load. Edit the settings if necessary.
4. The site will provide you with a share link, and an iframe embed code. Copy the code and paste it on your web page.
Additional directions, FAQs, and help are available on the Knight Lab website.