Install Aesop Story Engine
Head to the plugins tab within your WordPress administration area. Click on "add new". Once here, search for Aesop Story Engine, and press "search." Install Aesop Story Engine, and you're set! Hint: you can also install through FTP if you know that that is.
Build your Story
Go to any post, and locate the "Add Component" button. It sits right above the post editor. Once you toggle this, you'll be able to select the component, adjust any options, and insert it anywhere within your story. Galleries are managed with the "Galleries" tab within WordPress.