Add article title to read more link

From Joomla! Documentation

How to add an article title to the “Read more...” link?

For this you can use the overrides...

If they are not already there, in your template folder: create a new folder called 'html'.
In that folder you create a folder called 'com_content'.
And in that folder you create the folders called "category", "frontpage", "section"

Then locate the following files

• (joomla)/components/com_content/views/category/tmpl/blog_item.php
• (joomla)/components/com_content/views/frontpage/tmpl/default_item.php
• (joomla)/components/com_content/views/section/tmpl/blog_item.php

Copy the files to your template's html folders

• (yourtemplate)/html/com_content/category/blog_item.php
• (yourtemplate)/html/com_content/frontpage/default_item.php
• (yourtemplate)/html/com_content/section/blog_item.php

Open these files.
Nearly at the bottom of these files you should be seeing something like:

<a href="<?php echo $this->item->readmore_link; ?>" class="readon<?php echo $this->item->params->get('pageclass_sfx'); ?>">
     <?php if ($this->item->readmore_register) :
          echo JText::_('Register to read more...');
     elseif ($readmore = $this->item->params->get('readmore')) :
          echo $readmore;
     else :
          echo JText::sprintf('Read more...');
     endif; ?></a>

Change the line

echo JText::sprintf('Read more...');

into

echo JText::sprintf('Read more', $this->item->title);

The “Read more” link should now look like this: Read more: (Article title)