project server 2003

Hello sir,
I am hema with u.i want to know some information about project server 2003.
can you please guide me for this.
I want to know…
1)what is project server?
2)Benefits of project server.
3)Features of project server.
4)How to get software for project server?
5)How to install project server?
6)Use or working of project server.

Thanking You.
Hema Mesta.