This is certainly not another integration of Ravelry's functions into a mobile app, but rather the integration aims to ease browsing of knitting or crocheting patterns and generate lots of fun.
To read stories, simply select a feed that you like in the settings, and read them on the first tab called "stories". You can always update the stories by pulling down the table.
Choose one or several feeds from one of the hundreds of feeds and subscribe to them.
Go to the stories section, and let the app update to the most recent stories.
You can flip or swap through all stories.