Very basic Hello World Wordpress Plugin -

what i'm looking create basic plugin wordpress. i've followed countless tutorials , examples, haven't found close i'm looking for.

i'm trying create simple has link on admin nav bar, , shows static html on right side of page. public wouldn't see @ all.

this sounds simple task, far, has been simple. or pointing in right direction appreciated. :)

create folder named helloworld in plugins folder , add file called helloworld.php. in php file, use hook add link admin menu.

<?php /* plugin name: hello world */  add_action('admin_bar_menu', 'add_navbar_item', 100);  function add_navbar_item($admin_bar){   $admin_bar->add_menu( array(     'id'    => 'my-item',     'title' => 'my item',     'href'  => '#',     'meta'  => array(       'title' => __('my item'),                 ),   )); }