I have heard that there are some issues with the ESRI workbook GIS Tutorial 2. I do not see these issues on the errata I found online (http://downloads2.esri.com/campus/documents/workbooks/gistutorial2.pdf ).
For example, in Tutorial 3-1, the map on p.113 should have a graduated color map that looks like this:
But when you complete the tutoriail it looks like this:
If anyone has information on any other issues, it would be greatly appreciated. I am currently going through the text, but it's a big job.