This is a great starting point. I also think that GTD and Kanban perfectly fit together. As a practitioner by myself I tried to build my own GTD Personal Kanban Flow including lots of automation which makes my life so much easier.

https://medium.com/@stefan.willuda/how-to-boost-your-personal-kanban-with-getting-things-done-and-automation-a3a662087a1a

Here I’ve written a detailed explanation on how to use tools already out there and combining them neatly. Maybe you our your audience are interested.