The Project overview will give you an overview of the whole project. On left upper side in the Issue tracking area you will get an overview of how many task are open and closed for each tracker specified for the project. In the Members area you can see who are the members of the given project and in particular who is the administrator of the project. In the Latest news area you can see which are the latest news for the particular project.
TODO: Write about Issue trackers and configuration….
On the upper right side you see Sign in and Register. The Sign in link allows those who have an account for this project to login. The Register link allow unregistered users to register themselves, allowing them to be part of any projects contained within this installation of Redmine.
Note that the Register link can be disabled by the administrator.