You have to add a function to your functions.php
file. Something like this example:
add_action(‘init’, ‘mycustomcontent_init’); //enable custom content types
function mycustomcontent_init() {
// create content type Crafts
$args = array(
‘label’ => __(‘Crafts’), //content type name to be displayed in the wordpress dashboard
‘singular_label’ => __(‘Crafts’), //content type name to be displayed in the wordpress dashboard
‘public’ => true,
‘show_ui’ => true, // show the user interface for this content type? true=yes false=no
‘_builtin’ => false, //declartion to the system that it’s a custom content type and not a built in content type
‘_edit_link’ => ‘post.php?post=%d’,
‘capability_type’ => ‘post’, //set the content type features, here we setting it to the features of a standard post
‘hierarchical’ => false,
‘rewrite’ => array(“slug” => “crafts”), //prefix to the url alias for this content type, eg: mysite.org/crafts/model-ships
‘supports’ => array(‘title’, ‘editor’, ‘thumbnail’)
);
register_post_type( ‘crafts’ , $args );
}
taken from here.
Also, read up on the Wordpress Documentation for Custom Post Types