Student~C150~Ipswich,
I got a little booklet with my whizz wheel - and it might as well have been written in Martian scrawl for the use it was.
The ww does look complicated when you first see it but (as has been said before in the thread) if you can sit down with someone who can give you a guided tour, you will soon realise that it's a really remarkable bit of kit.
As for "When one starts flying for real (i.e. using a GPS for primary navigation) one never looks at the silly slide rule again" I can't really agree with that. I sat a mini GFT earlier this year (long lay-off from flying), and the examiner requested a demonstration of how I used my ww to work out my calculations.
PD