HTML Code:
<center> <!-- this centers everything that follows -->
<!--h1,h2,h3,h4,h5,h6 different sizes ranging from largest to smallest header text -->
<h2>blah blah blah</h2><br> <!-- br = line break-->
<font color="#FF0000"> <!-- for red, and instead of color="#FF0000" you can just put color="red" or "green" or whatever as long as its a basic color -->
This is red text
</font><br><br>
http://www.website.com <!-- for craigslist just type out the URL and it will link it automatically -->
</center> <!-- ends centering -->
and the <!-- text --> are just comments and you can delete them.