Read More Link button
Are you thinking like WordPresses "More" tag that allows you to create a "fold" for blog posts?
I understand how you want it..
My short answer is...
Use page list with custom template,
This is what I did for my site
I created a page with Page List block.
The text shows up on the Page List is "Description" of the page. And I added "thumbnail" page attribute, and created the custom template to display the thumbnail.
Plus I added to display the published date and page Owner's username.
concrete5 is very different CMS from Joomla and Wordpress.
They are blog & article CMS.
concrete5 is sitemap CMS with blocks.