The easiest way to add text to a Pod is to click on the 'Add blank' button from the middle of the screen.
A blank Text widget will appear below the bar where the 'Add blank' button is.
The Text widget allows you to edit the text with various formatting options contained in the text editor bar that appears when the blank text space is clicked.
You can also make use of the design commands by clicking on the dropdown with the + icon, or type forward-slash ( / ) to make the different design commands options appear.
Highlighting individual sections of text will allow you to change the formatting of just the highlighted text.