To install the Webroot SecureAnywhere Internet Security COMPLETE on a PC:

Click the link to start http://anywhere.webrootcloudav.com/zerol/wsainstall.exe
When prompted, choose a location to save the file and click Save.
Locate the file you saved on the desktop, or in the location you specified, and double-click the file to start the installation.
Select INSTALLATION OPTIONS to select ANY OTHER LANGUAGE.
When prompted, enter your key code.
Follow the prompts as they appear. 

 
 
To install Webroot SecureAnywhere Internet Security COMPLETE on a Mac:
 

Click the link to start http://anywhere.webrootcloudav.com/zerol/wsamac.dmg
Double-click wsamac.dmg to open the installer.
Drag the Webroot SecureAnywhere icon into the Applications folder.
Open the Applications folder by double-clicking the folder icon.
In the Applications folder, double-click the Webroot SecureAnywhere icon to begin activation.
Select INSTALLATION OPTIONS to select ANY OTHER LANGUAGE.
In the first activation window, enter your key code and click Activate.
If prompted, confirm the installation by entering your Apple system password and click OK.