The LiteDB setup expects to be able to create a file in C:\Temp. Should this not be possible, or you are not on Windows. The [ProduceDBConnection] will need to be modified accordingly.

Use 'Set Startup Projects' to 'Start' the GoGreen and GreenAPI projects. Then upon pressing 'Start' both projects will run in a browser window.

The website itself explains the rest of how to use it, where it's not self explanatory.

Execute the file RunAll.ps1 which is in this same Documentation folder. Should prompt for NETHost twice, which you'll need to allow, and start the 2 projects.