Trying to setup Postgres for the 1st time.

I installed Red Hat 6.0 (Mandrake 6.0) and chose to install the Postgres
package.

Apparently it isn't completely setup.  Are there any VERY EASY TO FOLLOW
instructions on configuring Postgres?  I read some docs that were suppose to
be about stetting this up but the guy went off on some tangent about
"parallel universes" and other very strange crap.  All I want is a step by
step instruction list.

Thanks.