From Jon Paynter:

Upgrading VW to the latest 8.3 version and loading the grease package from seaside did not supply the missing methods.
but I found loading the rossal2-full package from the public repository supplied most of the missing methods - but I still needed to copy one from a pharo image.
namely SequenceableCollection>>with:collect:

Also, visualworks doesnt have the {} paradigm of runtime evaluation like pharo does, so I had to convert some of the methods to use Array>>with:with:
like so:
      aLb := and feed: { notA . b }.
to:
      aLb := and feed: (Array with: notA with: b ).
Note -- the store package is called BraceConstructor, and it works great. 

Next, the code assumes arrays are mutable, but in visualworks Array>>at:put: throws an exception, but a simple change to Neuron>>weights: fixes the problem (for now)
Neuron>>weights: anObject 
     weights := anObject asOrderedCollection

Lastly, in the tests, the book makes use of Float>>closeTo:precision:  which doesnt exist in vw, but it has a method that does the same thing:  Float>>closeTo:range: so it was easy to add a wrapper method.

With these few changes, everything seems to work. all the tests pass, the graphs display exactly whats in the screenshots from the book.
Ive worked through the first 2 sections of the book, Perceptron and Artifical Neuron.  I'll post more if needed.