3 Answers
+ 1
yes, you have to look for a tutorial because it's too long to explain, and the advantage of Python is that you can use library
+ 1
you can build graphical apps (guis) with tkinter. look for video tuts on youtube.
+ 1
python is generally easier and faster to code with, while c# is compiled thus executing faster.
it's easier to make executables with c#, but Python needs additional, more complicated work to compile into an executable.