Todd Kopriva at Adobe is the guy who writes the documentation for AE. He wrote about troubleshooting the download and install process last week. Check out Todd's post here.
Troubleshoot download and installation issues – This covers issues with sign-in, the Creative Cloud app, how to download the software and updates and more.
Install and update applications – This page covers some of the same inforamation but talks about CS6 apps, the Adobe Application Manager and uninstalling the apps on Mac and Windows.
FAQ: Adobe Creative Cloud for Teams and Common Questions
News: Installing After Effects CC render engines with Adobe Creative Cloud
In Depth: Optimizing After Effects for the Best Performance
In Depth: Troubleshooting After Effects and other Hosts and Plug-ins
Get Adobe After Effects CC with Adobe Creative Cloud for Teams