Little Book of User Stories: Heuristics for requirements in an agile world

Little Book of User Stories
A Little Book of Requirements and User Stories

This book was written because, while User Stories look easy, I found I was answering the same questions again and again.

New: User Stories by Example, online tutorials based on Little Book.

Questions like: “How do I make my user stories smaller?” / “What is the right size for a user story?” / “What is the difference between an Epic and a Story? And where do Tasks and Sub-tasks fit in?” / “Who writes user stories?”