`TKDocs <http://www.tkdocs.com/>`_
Extensive tutorial plus friendlier widget pages for some of the widgets.
- `Tkinter reference: a GUI for Python <https://infohost.nmt.edu/tcc/help/pubs/tkinter/web/index.html>`_
+ `Tkinter 8.5 reference: a GUI for Python <https://web.archive.org/web/20190524140835/https://infohost.nmt.edu/tcc/help/pubs/tkinter/web/index.html>`_
On-line reference material.
`Tkinter docs from effbot <http://effbot.org/tkinterbook/>`_
Book by Mark Lutz, has excellent coverage of Tkinter.
`Modern Tkinter for Busy Python Developers <https://www.amazon.com/Modern-Tkinter-Python-Developers-ebook/dp/B0071QDNLO/>`_
- Book by Mark Rozerman about building attractive and modern graphical user interfaces with Python and Tkinter.
+ Book by Mark Roseman about building attractive and modern graphical user interfaces with Python and Tkinter.
`Python and Tkinter Programming <https://www.manning.com/books/python-and-tkinter-programming>`_
Book by John Grayson (ISBN 1-884777-81-3).