The preliminary version of "NumPy Tutorial" is at "Tentative NumPy Tutorial".
However, in the mean time, there is some documentation for the previous version of NumPy that still mostly applies, and which is tutorial in nature:
Old NumPy documentation - HTML format
Old NumPy documentation - PDF format
The NumTut files used in the tutorial can be found on SourceForge.
The biggest difference is that instead of "import Numeric" you should use "import numpy".

