This plugin allow you to create any number of shortcodeas, easily edit content and use it in posts and pages. You can use one shortcode inside other shortcode that allows you to build complex content systems.
Leftside you will find Shortcodes menu. There you can add new shortcodes, edit current etc. Standart interface.
For advanced users: In single editor you can also put shortcode content in div element and add class and additional styling to this element. That will help you to make code looks good in your design.