[Tutor] Updated topic on my tutorial

[Alan Gauld]

I don't normally announce new toppics as I translate them to v3
however I've done quite a bit of rework/expansion to my OOP 
topic, including adding some basic stuff about UML diagrams.

I'm interested in any feedback, especially whether the UML
helps or hinders understanding! And of course any errors 
you see - there will almost certainly be a few!

The direct link is
http://www.alan-g.me.uk/l2p/tutclass.htm

Regards,


-- 
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/