I think your advice is bad. I think YOU want to avoid learning the true nature of GUI programming, so you need a RAD tool, so you advise this to everyone else. You are just lazy.

Anyone with any knowledge of GUI's will tell you you are better off avoiding RAD tools because of the incomprehensible boilerplate code it produces. Try debugging a difficult glitch in boilerplate code, and you will wish a real programmer wrote the code with sensible variable names.

As for teaching newbies, Tk's documentation, tutorials and books far surpass anything Wx has, not to mention the rediculous object-oriented layer which Wx imposes on you, just to pop open a few windows.