Are you able to log in to the RPi2 using SSH or console and navigate Linux? Can you use a text editor to change a file? That's really the only fundamental thing to learn on your own before we can make some great progress here. Ast-GUI is a fine platform and well suited to the small device you have. Just a slightly steeper learning curve than some other options.
Let me try again. There is no FreePBX GUI option at this time for a Raspberry Pi 2. There is a FreePBX GUI edition for the original Raspberry Pi, but it won't boot on a Raspberry Pi 2. So you would have to start with a Raspberry Pi and upgrade it to the latest release of Raspbian. Then you could use that microSD card to boot up a Raspberry Pi 2. We don't recommend this approach, but it does work.
When time permits, we will release an updated version with the FreePBX GUI for the Raspberry Pi 2 platform. We don't have a release date in mind at the moment. Functionally, the existing build for the Raspberry Pi 2 platform does 95% of what most PBX users need and use with this device.
http://sourceforge.net/projects/pbxinaflash/files/IncrediblePi-1.x-Debian-6/
Grant_N7AS, do you have any Linux experience?
IncrediblePBX, Asterisk, FreePBX, and Asterisk-GUI are all built on top of Linux. Generally speaking, it's recommended that you have some general Linux knowledge before attempting a project like a DIY PBX system. And even then, PBX is a different beast. There's a lot to learn. I recommend going here for a 5-minute primer on Linux - http://community.linuxmint.com/tutorial/view/100
I think it will help.
Grant, if I can ask, what has you interested in a PBX system?
Just a recommendation, but if you have no interest in learning Linux, or how to administer a Linux server by getting down and dirty with the terminal, then you should probably use a service like Phone Booth. Linux and OSS can be fun, but it can also be extremely frustrating as well. Good luck.
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