Jon Weatherhead

Group related posts in a series. Automatically insert a list of all posts in the series as part of the content.
Manually embed a series listing with the provided shortcode and widget. Override the series template with a custom template.
A great <a href="https://planetjon.ca/4823/making-a-blog-series-with-also-in-this-series" title="How to use Also In This Series" rel="nofollow ugc">rundown of the plugin</a> is available on the Planetjon blog.
<h3>How To Use</h3>
Create new Series terms from the Series manager under Posts. Add posts to series either through the quick edit screen or through the full edit screen.
Also In This Series can be configured to automatically insert a series listing in posts belonging to a series.
To do so, navigate to Also In This Series settings under the settings option.
<h3>Settings</h3>
<ul>
<li>Title heading level sets the HTML tag that will wrap the series title in series inserted automatically, with shortcodes, and with widgets.</li>
<li>Title template picks from a list of title presets for displaying the title, including a presetfor no title.</li>
<li>Automatically display series listing on post allows for automatic listing insertion in posts that belong to a series.</li>
<li>Order of series display controls the order of posts (newest first or oldest first) in series listings.</li>
<li>Window series listing display creates a window around the current post in a series listing. This is useful for large series where it is cumbersome to show the entire listing at once.</li>
<li>Do not display series listing prevents the series listing from being shown. When checked, a link to the series is always shown.</li>
<li>Always show series link forces a link to the series archive regardless of windowing. When unchecked, a link to the seriess will not be shown when the entire series listing is visible.</li>
</ul>
<h3>Shortcode</h3>
To manually insert the series listing of a post within a series as part of the content, use the shortcode [alsointhisseries].
This will have no effect if the post isn’t in a series.
To manually insert a specific series, use the series-slug attribute with the shortcode like [alsointhisseries series-slug=”your-series-slug”].
The shortcode attributes are
<ul>
<li>series-slug=”slug”</li>
<li>use-frame=”yes|no”</li>
<li>frame-width=”number”</li>
<li>sort-order=”asc|desc”</li>
<li>title-wrap=”h1|h2|h3|span”</li>
<li>title-template=”also-in|ordinal|none”</li>
<li>hide-series-listing=”yes|no”</li>
<li>always-link-series=”yes|no”</li>
</ul>
<h3>Widget</h3>
A widget that exposes all of the above options is available.
<h3>Custom Template</h3>
If you’d like to use your own series listing template, there are two options available.
<ul>
<li>Place a template file <code>also-in-this-series/serieslisting.php</code> in your theme.</li>
<li>Use the alsointhisseries_template filter to provide an absolute path to a template file.</li>
</ul>

Also In This Series

Group related posts in a post series and automatically list all of the posts in the series as part of the content.

emmanuelg

WordPress gives us a lot of ways of classification: categories, tags, date … All of these methods are efficient, and cover most of our needs. But they are applied to all posts, and don’t allow differenciating or highlighting some specific posts. 
Sometime, it may be helpful to group items into folders or into series, in order to promote these posts, or simply because they belong to a logical sequence, such as tutorials with several stages.
The EG-Series plugin gives a set of easy and ergonomic functions to manage series of posts. This plugin allows to include posts into series, to create, delete or rename series. It also includes widgets and shortcodes to display list of series, or the list of posts belonging to the series of the current post.
EG-Series use only standard tools of WordPress, and doesn’t create additional tables or objects in WordPress. The version 2 of the plugin uses the taxonomies. The main advantages are:
<ul>
<li>The plugin was created in order to reduce as possible, manual operations, and reduce the number of errors,</li>
<li>EG-Series is fully customizable: users can choose the label of shortcodes, and slug used for series’ link,</li>
<li>It can be installed and configured very quickly. It also allows to modify a lot of posts without editing them.</li>
</ul>
With this plugin, you can:
<ul>
<li>Add / Delete a post from a serie,</li>
<li>Create / Rename / Delete series,</li>
<li>Display the list of series in a post, or display this list in sidebar, with widgets for exemple,</li>
<li>Display list of posts, using an another shortcode, or an another widget,</li>
<li>Automatically insert the list of posts of a specific serie, without using shortcode.</li>
</ul>
EG-Series is TinyMCE Integrated. That means you don’t need to learn the shortcode syntax. The plugin adds a button in the tinymce toolbar. You just have to click on this button, choose parameters/options, and click insert. That’s all, the shortcode will be insert into your post with the right parameters.
<h4>Contributions</h4>
Thanks to the following people for their help
<ul>
<li><a href="http://cedric.bosdonnat.free.fr/" rel="nofollow ugc">Cédric</a></li>
<li><a href="http://monkeyman.be/" rel="nofollow ugc">Jan Fabry</a></li>
</ul>
<h3>Customize your theme</h3>
EG-Series 2.x uses now a specific taxonomy to implement series. It means
<ul>
<li>The link to series can be: http://host/path/[slug]/[Name of the serie]</li>
<li>You can build / customize a specific page in your theme to display the content of a serie.</li>
</ul>
In the path <code>.../wp-content/plugins/eg-series/themes</code>, you will find some available customization for themes Twenty Ten, … 
To customize these themes, just copy the file <code>taxonomy-series.php</code> into the path of your theme <code>.../wp-content/themes/[Name of the theme]</code>.
You can also customize your theme, by modifying the <code>index.php</code> or <code>archive.php</code> file. For example:
name)); 
 ?>
<pre><code><div class="archive-meta"><?php
 echo htmlspecialchars(term_description( '', get_query_var( 'taxonomy' ) ));
?></div>
</code></pre>
To customize your theme templates, you have some templates tags available in the file <code>eg-series-template-tags.inc.php</code>

EG-Series

I've been using this very capable plug-in - almost a suite of plug-ins - for organizing and displaying posts in series for several years. I should have given it a positive review long ago.
The only reason I would hesitate to recommend it to others is that it has not been updated in two years. It also has some very minor functionality and language glitches and less than comprehensive documentation.
In addition, not being updated/supported means that some problems have crept in. After the WP Core upgrade to 4.2, the widgets stopped appearing: It turned out, however, that a fix was very simple (see Support Thread: https://wordpress.org/support/topic/has-the-latest-version-211-lost-its-widget?replies=5#post-8181189). 
So, you should be prepared to do some figuring out for yourself, although, once you do figure it out, you'll find that it works very well, it comes with rich options for alternative display and linking modes, and that the pieces are knit together quite well.



4 Stars not 5 only because no longer supported

EG-Series helps you to organize your posts in a new way, allowing the creation of groups (series) of posts. Can be useful to promote some posts.

Also In This Series vs EG-Series