Editing your theme’s functions.php file
WordPress version 3 does not allow you to create custom taxonomies from the administration screen. To initially define your custom taxonomies without a plugin, you’ll need to add a little bit of code to your theme’s functions.php file. This isn’t too difficult — just follow my lead.
To add custom taxonomies, we need to edit the “functions.php” file found inside your theme directory. Location of functions.php : [website_root]/wp/wp-content/themes/[your_theme]/functions.php (more…)