To start, click the Apple logo in the top left of the menu bar, then click "About This Mac".
On the new window, note down the Processor, Memory, and Graphics.
And that's it, you've gotten the technical specs for your Mac! For more in depth info, click the System Report button and a window with very specific information will pull up if you need any detailed info.
If the guide didn't provide the support you required, or you are still having issues, please contact CDM AV Support at email@example.com or call (312)-362-1297