The QuickSupport TeamViewer download page is here: http://www.teamviewer.com/download.
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