How to install TeamViewer

The QuickSupport TeamViewer download page is here:

For Windows you should download the “Quick Support” version.

For Debian you’ll need to download the “Deb” 32-Bit / 64-Bit Multiarch “All-in-One TeamViewer Full Version” file and SAVE IT TO DISK.
NB: Don’t go for the 64-Bit without Multiarch version (it seems to have a few issues, as of August 2014).

Then you need to install it with gdebi:

sudo gdebi /Downloads/teamviewer_linux.deb

(where teamviewer_linux.deb is the name of the downloaded file).

Once installed, you can find and open it from the Applications Menu:

Applications Menu > Internet > Teamviewer