[Tkinter] Any good source to learn GUI

[Larz60+]

Along with already mentioned, I like this tutorial: https://www.python-course.eu/python_tkinter.php
And this reference is the best yet: http://infohost.nmt.edu/tcc/help/pubs/tk...index.html
with PDF here: http://www.nmt.edu/tcc/help/pubs/tkinter/tkinter.pdf