git central repository and Team

I have been playing around with GIT on my local computer.

As I have gain a bit of knowledge using GIT like add, commit, merge, branch, checkout, status.

I still have more to learn but im confuse one thing.. how does git handle team?

For example:

• Developer A computer
• Developer B computer
• Developer C computer
• Central repository (Server)

All Developers working on the same project.

From what I understood (correct me if im wrong).. A ,B and C developers push their branch (master?) to central repository via SSH remote.

But on the central repository, how do I get information or which files (or branch?) that has been pushed from the developers... What would it look like on the central repository?

On the central repository, how would handle merges developers work?

Thanks.