Ok, Here is a simpler way now to setup the server.

1) add second user - sudo user

1.1) add seconduser to 'wheel' group - admin prev.

So firstly, add the user to the wheel group:

usermod -a -G wheel demouser

Next, give the 'visudo' command:

visudo

Near the bottom of the file you will see this line:

## Allows people in group wheel to run all command  # %wheel  ALL=(ALL)       ALL

Simply uncomment (remove the '#') so it looks like this:

## Allows people in group wheel to run all commands   %wheel  ALL=(ALL)       ALL

To save and exit, type :wq and press Enter.
Now members of the 'wheel' group have full sudo privileges.

2) Run update on your fresh install

sudo yum update

3) Optional. Install development tools - which are bunch of often used packages.

sudo yum groupinstall 'Development Tools'

	wget http://software.virtualmin.com/gpl/scripts/install.sh

		sudo chmod +x install.sh

		sudo ./install.sh