[docs] Recommendation for tutorial.

[bob gailer]

"Python 3.6.1 documentation

Welcome! This is the documentation for Python 3.6.1.

Parts of the documentation:

What's new in Python 3.6?
or all "What's new" documents since 2.0

Tutorial
start here"

Within the Tutorial " It helps to have a Python interpreter handy"

Jessica McKellar commented several years ago regarding the lack of 
adequate instructions for getting and installing python. It seems that 
is still an issue.

If I were a newbie I would be stuck at "have a Python interpreter handy".

SO I recommend we add a link to installation instructions. There is a 
fairly good guide at https://wiki.python.org/moin/BeginnersGuide/Download.

I don't see anything that would help a newbie edit and run a program.

The more I read the bigger my pile of ideas and recommendations gets. 
What is the best way for me to communicate these?