To change your font, start by clicking on your text box to select the text.
Next click on the pencil tool, highlight the text, then with the text highlighted click the drop down menu in teal on the top of the page, if you haven’t changed the font yet it will usually say “Roboto,” which is the name of the default text. With the text still highlighted, you can select different fonts and it will change them. Click away from the text to see what the text looks like when it is not highlighted.
For more download the video tutorial below: