Python is a free open source programming language. At an advanced level, it’s a powerful and flexible language, but it’s clear and straight forward syntax, and it’s forgiving nature, make it a great way to introduce people to programming
and computer science.
Younger learners can start by writing programs to draw shapes and
patterns in the PythonTurtle learning environment. They can also learn to write simplified functions to help Guido Van Robot to explore his abstract world. Both these programs provide learners with an interactive environment to learn basic concepts like sequencing, conditional branching, looping and procedural abstraction through problem solving with instant visual feedback.
PythonTurtle
When learners are ready, they can use the Python programming language to explore a free online course book like How to Think Like a Computer Scientist. Advanced learners can graduate to graphics and game programming with a free online course like Invent Your Own Computer Games with Python.
Python is such a flexible language that learners have the opportunity
to exlore procedural, functional and object oriented styles of programming that they can use later if go on to study languages like
C, C++, Java, and Haskell.
Mark Adrian Bell
open education, linux and open source 
Very nice, I like the ways you gave to get started with Python