The Digital Library firmware is available here:
https://download.villagetelco.org/firmware/digital-library/releases/
Documentation is available here:
https://download.villagetelco.org/firmware/digital-library/documentation/
The main User manual is available here:
https://download.villagetelco.org/firmware/digital-library/documents/Release/Digital-Library-Manual-Ver-2.1.pdf
The Wiki page is here:
https://wiki.villagetelco.org/index.php?title=Digital_Library_Firmware
There is a wide range of educational content freely available for download from the RACHEL project and other resources. For further information refer to:
https://download.villagetelco.org/firmware/digital-library/documents/Release/Digital-Library-Content.pdf