The image popUp technique, shown here, comes from a WordPress plugin. Plugins extend the functions that come stock with a WordPress blog.
Lots of shareware, free and professional plugins are available. Handy tools like a text editor that provides quick formatting for your blog’s text.
The editor I’m using in this blog is TinyMCE Advanced. It help’s speed the process of “dressing up” your text plus adds features like “create a link” (like this link)- LauberDigital.com