Bro there is option for group image in manage group page. upload your image there. It will be uploaded as cover image. But it's looking nice also in description area.
This is a great idea. We could let each other know:
- new authors that are promising to read and check out
- when a new book in a series is about to be released
- if you like a particular author or genre, we could have a authors "that are like" section