Using a polytonic Greek Keyboard – NT Greek et al.
Windows
How to Use Greek Keyboard Layout by Installing Greek Fonts and Typing – Goblintechkeys
Windows
Tagg'r Computer Keyboard Layouts
typography - On the Windows polytonic Greek keyboard, what is the difference between the accent on q and the accent on semicolon? - Latin Language Stack Exchange
Enabling Greek Characters on Your Keyboard - Wikiversity
Pages FAQ: How do I add Greek symbols to my document?
80 Keyboard Layouts for Windows - Identification Guide | Keyshorts Blog
Typing Polytonic Greek in a Windows Environment | Dickinson College Commentaries
How to Configure MS Windows (Vista 7 and later) for Greek Typing | billmounce.com