[Tutor] Tutorial update

[Alan Gauld]

Just a note to say that the v3.1 version of my tutor has reached another 
milestone.
I just uploaded the last topic in the Basics section which means the 
tutorial is
now sufficiently complete that it could be used by a beginner to learn V3 
Python.

It hasn't had enough traffic to call it good quality yet - I'm sure there 
are lots of
mistakes to find - but its definitely useable.

The remaining two sections will progress and my usual snails pace :-(
Then I might get started on finishing the remaining topics in the 
Applications
section - andmaybe even add a few more new ones!.

Enjoy,

Alan G.