any of the people here want to walk him through Linux or a package manager.
most of us here will take a PM
but will then repost it on the thread , so that everyone can benefit
you are using CentOS 6.5 , the free rebuild of RHEL 6.5
redhat is , shall we say VERY CONSERVATIVE !!
in the software used
it is OLD !!! software
But very very very WELL tested and with bug fixes and SECURITY updates "back ported" to it
this makes for a VERY VERY STABLE
in the last about 6 years or so i have only had ONE ( 1 ) ,one crash on CentOS
and that was 100% MY FAULT -- I caused it
on fedora , i had gnome crash about once every few days
and Xserver went with it sometimes
on SUSE ( on older 11 install) i had the WHOLE desktop crash almost EVERY DAY
on Cent -- NONE
BUT that comes at a cost
older BUT bug fixed software
this makes RHEL and CentOS a bit difficult to use on a HOME set up
although i run ScientificLinux on my home computer
it is NOT my everyday operating system
for that i run OpenSUSE
you might want to start with reading through the centos wiki
the page on "software repos"
then you might want to go to the book store or Amazon
there are many RHEL6 books
and at about $12.00 to $24.00 , worth the price
like "Red Hat Enterprise Linux 6 Administration: Real World Skills for Red Hat Administrators ["
"A Practical Guide to Fedora and Red Hat Enterprise Linux (6th Edition)"