You often have to print out node variables to see what you need to do. There are few ways to do that, before i used Drupal Themer for doing this which is part of Devel module. But this is very slow module and it takes a lot of time to load so i am not using it anymore. You can either use dpm function from devel module to dump something to screen nicely or just using plain old
<pre><?php print_r ($node); ?></pre>.
Will get you printed node structure. So past that into your code, node.tpl.php or page.tpl.php.