4 Answers
+ 2
Firstly, Learn Tkinter module, then install other modules. Good Luck
+ 2
I would recomend kivy after learning Tkinter.
It is cross platform, running even in android.
And it is easy to learn.
I would say that it is even easyer than Tkinter.
But, that's only my opinion.
+ 2
Thanks cruz
+ 1
You can build GTK+ applications, there's a lot of nice documentations and tutorials, and also you can build apps with PyQt (together with Qt Creator) but there isn't much of a good tutorials for it.