The slides presented during the tutorial are available for browsing as follows:
The latest versions of the W3C XML Schema drafts are available as follows:
XML Schema Part 0: Primer
XML Schema Part 1: Structures
XML Schema Part 2: Datatypes
Free or free-for-evaluation tools for working with XML Schemas:
XED: A structured XML text editor
Web access to XSV, an XML Schema validator
XML Authority from Extensibility (I haven't tried this myself)
XML Schema processor
from Oracle (I haven't tried this myself)
XML Schema
processor from IBM (I haven't tried this myself)