I was wondering if it is possible to use the programs on multiple computers when you have the membership?
From the doc : http://www.adobe.com/products/creativecloud/faq.html
"You can install the desktop applications available in Creative Cloud on your primary computer and one backup computer, as long as they are not running at the same time. You will have access to both the Mac OS and Windows versions, so if you have a Mac at home and a PC at work, for instance, you can install your applications on both. See the product license agreements page for more information."
So just to clarify
Can 1 license access Photoshop on one machine, and a different adobe application like After effects on another machine at the same time?
How about the Adobe touch apps for the ipad? Does the ipad count as a third machine?
If Photoshop was being used on 2 computers at once, would the application quit or show a warning to close the currently running version?
For the first question, the answer is yes. You can run two different Adobe products simultaneously on two computers.
Adobe Photoshop Touch is different from Adobe Photoshop. So, technically they are two different products on two computers. I am not sure if that was your question.
For the third, I haven't tried it, but I guess that you get a message saying that you are running on the application on multiple computers. And you must quit on one.