I just published my Thunkable X book for beginners, learners and students in the English version. The book starts app development from the first steps up to some advanced subjects.
It is not a complete handbook about all topics of Thunkable, but it covers many of them with step by step examples.
„Karl-Hermann Rollke, IOS Apps and Android Apps development with Thunkable X, Amazon“
Here the link to the book in Amazon:
PS: Now I am working on a Kindle version. Coming soon…