How to Create a Test Lab So That You Can Follow the Geek School
 

Our Geek School articles can get pretty complicated, and there’s no reason to do a ton of crazy stuff on your own desktop PC. Instead, you can just VirtualBox like we do to create virtual machines for all of your testing. Here’s how to do it.

You can even network multiple virtual machines together, so as long as you have a decent amount of RAM in your PC, you can fully test a scenario without messing with your PC’s settings at all. It’s a much safer way to learn!

http://www.howtogeek.com/148785/how-...e-geek-school/