The iMac
There is no apple key on a newer iMac.
The iMac is an Apple computer.
Every application and window you open will have a help tab in the menu on the top left of the screen.
After adding a Magic Trackpad to your iMac you need to run Software Update (from the Apple menu - top left corner) which will add a Trackpad section to your System Preferences.
Click the Apple logo top left of the screen and from the drop down menu click Shut Down.
The Apple iMac is a computer and its purpose is to compute.
You do not make the iMac, Apple does.
One can read Apple iMac reviews online at various websites. One can read Apple iMac reviews online at websites such as CNET, TechRadar, and Computerworld.
I do not have a 24" iMac. I have a 20" iMac. Apple no longer sells the 24" iMac. If you will click the Apple logo on the top left of your screen and then click About This Mac then More Info you can find the answer.
On an iMac you can go to the System Preferences under the Apple Menu, then go to NETWORK. Choose which device connects you to the internet, wether it be wireless or wired, then click ADVANCED. From there your 'DNS' tab is clickable and will give you the specified information.
the iMac