You can type in anything you want here. Introduce yourself, tell them who you are and how you help people. Use whatever font you'd like and run with it. (For this section I chose the 2 column, photo on left, text on right under the general tab, and deleted the button).
You can type directly in here or create a word graphic and insert that.
If you're writing blog posts regularly (which you should be), choose this option instead of the last one (recent blog posts 3 column) and it will automatically update these posts. You don't have to change anything except for the title above.