@rubeus: Tkinter gui stuff can be incredibly tedious and unintuitive for anything other than the simplest of dialogs/tasks. What I've picked up about it has mostly been through Google searches, hours of tedious trial and error, and much, much "code borrowing."
When it comes to placing widgets (geometry management), there are two methods used "grid" and "pack." Both have their pluses/minuses, but both can be used pretty easily (for simple interfaces). The only time you really need to worry about using Frames is when your interface layouts get increasingly complex.
Some sites I've used repeatedly are:
http://effbot.org/tkinterbook/
http://zetcode.com/gui/tkinter/
And of course, Stackoverflow.com.
If you want to create git repositories for your plugins' code, I'd be happy to provide some input/direction/pointers when you get stuck on something.