The only way to add text to your Google Site is by adding text boxes. Watch the video and/or follow the instructions to the right to add text boxes and practice using some of the text box tools.
#2 Adding Text Boxes.webm
In the upper right corner, click on "Insert"
Click on "Text Box"
This will add a new section to your site. You can resize the text box, move in around in that section, or even move it into another section.
Practice using some of the tools at the top of the box:
change the text style
use bold or italics
change justification
use a numbered or bulleted list
insert a link
delete the textbox
click on more editing options
code font
strikethrough
clear formatting
Don't forget to click on "Publish" when you are finished updating your site so that your changes apply to your finished site.