Just Drag an Text Editor widgy from the toolbar to the desired place .
The blue line shows where the widgy will be placed. Text editor pops up and now you can insert any text in that.
There is a toolbar attach to the text editor. By using that toolbar you can give a different look and feel to your text on your Site.
If you don't need the part of the page, you can simply delete the block of the text using the delete command.