Once you’re in the graphic editor, click the Text tab.
This is where you can add a heading, subheading or body text. All three options will add a text box to the canvas, they’ll just have different starting fonts and sizes.
To type your own text or edit existing text, simply double click on the text box and select the whole text or just the part of it you will edit. Once you are ready, click outside the selection to deselect the text.
To modify the font, size, color and other font options, use the selections in the left-hand pane.