I am sure i will have to do a custom re-install, as the out-of-the-box general install is a little limp on packages.
You are right your Linux is a bit rusty and Linux has moved on a long way.
Your Linux Bible is probably going to be more distracting than useful.
What I would do is...
Download the CentOS7 Minimal ISO, burn to a bootable USB stick and run the install.
Getting the network up can be a bind the first time you do it, you could always ask here though..
Once you have internet access,
yum install nano
yum install wget
Then, hop over to webmin.com, import the pgp key, create the repo
yum install webmin
systemctl start webmin
Point your browser at htps://server_ip:10000
And it all get's a lot easier from there on in.