How to make a blog member-only

I use this plug in to do it.
https://blog.taragana.com/index.php/archive/angsumans-authenticated-wordpress-plugin-password-protection-for-your-wordpress-blog/

Don’t use plugins for things that is so easy to modify via page templates.

Example template code:

<?php
/*
Template Name: Members only
*/
?>

	<div id="maincontent">
			<div class="page">

<?php if (have_posts()) : while (have_posts()) : the_post(); ?>

			<div class="post" id="post-<?php the_ID(); ?>">
			<h1 class="newstitle"><a href="<?php the_permalink() ?>" rel="bookmark"><?php the_title(); ?></a></h1>
			<div class="postcontent mt20">

			<?php if (is_user_logged_in()) : <strong>// CRUCIAL!</strong> ?>
			<?php the_content(__('(Read more..)')); ?>
			<?php else : ?>
			<div class="errorbox">
			<h2>Sorry.</h2><p>This page requires that you are a member of this page, please log in or become a member.</p>
			</div>
			<?php endif; ?>

			</div><!-- postcontent end -->
			</div><!-- post end -->

			<?php endwhile; else: ?>

			<p><?php _e('Sorry, no posts matched your query.'); ?></p>

			<?php endif; ?>
			<?php posts_nav_link(' — ', __('< Previous page'), __('Next page >')); ?>

			</div><!-- page end -->
	</div><!-- maincontent end -->

Regards,
Tommie Hansen
Dekorfilm.se | Mindescape Reklam

Thank you so much!