Adding links and styling admin bar

I want to add links and position some of these to the right side of the admin bar and some to the left.

I want these links to appear when users are logged out and logged in. So far this is what I have. This is added to my theme’s function.php file. This adds the login and search to the admin bar for logged out users. I would like to add additional internal and external links like Email, network site home page, and a dropdown list of all network sites. Is it possible for this admin bar be displayed across all network sites? Do do this what files should I be working with and where in the code below would I add the links? And what would the syntax be?

//Always show the admin bar
function OXP_login_adminbar( $wp_admin_bar) {
 if ( !is_user_logged_in() )
 $wp_admin_bar->add_menu( array(
'title' => __( 'Log In' ), 'href' => wp_login_url() ) );
}

add_action( 'admin_bar_menu', 'OXP_login_adminbar' );
add_filter( 'show_admin_bar', '__return_true' , 1000 );