Webmonkey: ColdFusion MX Overview
Here's a nice multi-part article about using ColdFusion MX that is both well-written and makes a great tutorial on what's new. A handy how-to that takes you through writing a UDF, a CFC, and creating and accessing Web services in ColdFusion MX. House of Fusion is mentioned as a prime resource for CF developers.
ColdFusion MX Overview (Webmonkey, August 15, 2002)