when using VB, it would be helpful to have a concise dictionary of terms to
describe their meaning, interpretation and use. For example when I type:

Dim something As String

What does 'Dim' mean and do?

etc. etc. etc. for all terms that Visual Basic in Excel recognises and
understands.

Is there such a thing?

I have 'VB for Dummies' in pdf, but it does not contain this information
accessibly and the 'glossary of terms' in help doesn't seem to cover this
either :-\