Recently I got through a couple of interviews and exams for a linux admin job but am still a bit lost as I have one more to go. The company wants a focus on Apache and mySQL which I have been workign with on both CentOS and Ubuntu as they said it will be the used platforms, with Red Hat/CentOS being the standard. I have been able to setup some basic Apache sites and learned quite a bit and read up on mySQL but still feel kind of lost. I was able to get all the ifnormation studied that they told me too but I would like to be more prepared.

I have a Linux+ book I can read to study on general Linux but does anyone have any good practical guides for studying different aspects of Apache and mySQL I can use to prepare? I have VMs set up but thats limited by my own imagination and I have nothign really to do with them.