How to add text to header below title but above nav

Well, unless the theme is doing something weird with the hook, all you should need is:

function my_branding() { ?>
  <div id="blurb"> LCN provides ABE (adult basic education), ESOL (English for Speakers of other languages), and GED instruction at little or no cost to adult learners in our community. If you need instruction or would like to be a volunteer tutor, please call 610-292-8515.</div>
  <div style="clear:both;"></div><?php
}
add_action('cryout_branding_hook','my_branding');

You may have to track down the cryout_branding_hook() function to see exactly what the function name is and you may also have to track down the function for debugging if things are weird. As this is a theme specific function and hook, I’m guessing about a lot of things.