Add your own URLs to WordPress admin bar

functions.php

// Add your own links to admin toolbar
function tbm935_custom_toolbar($wp_admin_bar) {
  $wp_admin_bar->add_menu( array(
		'parent' => 'site-name',
		'id' => 'calendar', // Replace this
		'title' => 'Calendar', // Replace with a name
		'href' => 'http://techbasedmarketing.com/wpengine/wp-admin/edit.php?page=cal' // Replace with your own URL
	));
	$wp_admin_bar->add_menu( array(
		'parent' => 'site-name',
		'id' => 'bloglink', // Replace this
		'title' => 'Blog', // Replace
		'href' => home_url( '/' ).'blog/' // Replace with your own URL
	));
}
add_action( 'admin_bar_menu', 'tbm935_custom_toolbar', 90 );