To add text, first select the "add" button and click "text". Drag it where you would like it to be (preferably inside of a layout).
Once you select an option, you will need to select the text element and click "edit text" to change the text.
From the "edit text" screen you can also change the style and formatting of the text including the type, make bold, make italic, change text color, change paragraph format, make bulleted lists, make numbered lists, change color, change highlight color, etc.
If you do not see the option you are looking for, click the arrow to expand the edit menu.
Highlight the text you want to make a link, click the link icon, fill in the desired properties, click "apply".
An anchor is used to jump the user to a specific part of the page. It's like a link within a page.
Click the flag icon, fill in the anchor name, click "apply.