Postgres tutorial examples !

Dear Postgres Users,

I am new to Postgres. I succeded to install Postgres on my Linux -PC. It
is working and
I learning a lot from the html documentations.
However I did not find exemples or a samples of databas, query....
with the distribution I have (6.4.2)
In the tutorial they said that I will find examples under
'/usr/local/pgsql/src/tutorial/'
or some where else where pgsql is installed

So could any one of you help me to get or point to me where (web or ...)
Ican find this
the src/tutorial examples this would encourages me to get started.

I find the Postgres doc and mechanism very nice and understandable . So
It would be great from
you to help me get started

Thank you very much
Naceur