End of a Sprint, Beginning of a Journey – Web Comic

All sprints come to an end. After a set period of time, the sprint will come to a close and the team will review the work done in the sprint, and then reflect on the things that went right and the things that went wrong in the sprint. A new sprint begins as soon as the current sprint ends. Every sprint should be able to produce something immediately usable.

Story Assignment – Web Comic

In Scrum, it's important that developers communicate when they are working on stories. (Stories are the fully-broken down chunks of work that are put into the Sprint Backlog.) When a developer starts working on a story, they need to indicate in some way that they have assigned themselves that work, or else there is a risk that another developer might start working on the same story without knowing it's already being worked.