eroux

Supplying an <a href="https://en.wikipedia.org/wiki/International_Standard_Book_Number" rel="nofollow ugc">ISBN</a> (and, optionally, a Title) will display a cover image of the relevant book with a link to that book’s page on <a href="https://books.google.co.za/" rel="nofollow ugc">Google Books</a> using the Google Books API.
Using the Widget you can choose whether to:
<ul>
<li>Force all calls to Google to be HTTPS, instead of the API returned HTTP</li>
<li>Pad the Image (selected by default, uses internal CSS)</li>
<li>Display a Box-Shadow (selected by default, uses internal CSS)</li>
<li>Choose Alternate Google Country (defaults to “Worldwide”)</li>
</ul>
as well as
<ul>
<li>Decide whether you would like to use a Title</li>
<li>Define the ISBN-10 or ISBN-13 of the book.</li>
</ul>
<h3>Usage</h3>
<ol>
<li>Activate the Plugin via “Plugins” → “Currently Reading” → “Activate” (if you hadn’t already done so).</li>
<li>Go to “Appearance” → “Widgets” and drag the “Reading” widget into whichever Sidebar you choose.</li>
<li>In the “Currently Reading” widget, you can then customise it further.</li>
</ol>

Currently Reading

Displays a cover image of a book with a link to Google Books based on a supplied ISBN-10 or ISBN-13.

TomHarrigan

jmarx75

codeandtheory

In addition to normal infinite scroll behavior, this plugin adds infinite scroll to the single post page. When reading a single post, once the reader reaches the bottom of the page, the next post loads in. This is similar to functionality on big news sites such as Time.com, LA Times, Quartz, Vogue.com
The default WordPress TwentySomething themes, Genesis themes and Canvas themes are already compatable with this plugin and ready to go!
Relies on add_theme_support. If your theme is not in the above list, add the folliwing to your themes functions.php file: <code>add_theme_support( 'infinite-transporter' );</code>
See installation and FAQ sections for more on getting set up.

Infinite Post Transporter

Infinite scroll extended to single post pages

Currently Reading vs Infinite Post Transporter