These tutorials were written a few years ago and were not necessarily upgraded since then. Nonetheless, they are still available and still mostly functional for anyone who might be interested.
Microsoft Agent Programming
You will find many resources covering Agents programming on the internet but few of them actually target Visual Basic 5, one of the most popular development tools on the market. These pages are not intended to teach you the Basic programming language but to show you how to implement the Microsoft Agent ActiveX Control in your Visual Basic applications. (1998)
Let Merlin, one of the Microsoft Agent characters, take you to an introduction tour of VRML, the Virtual Reality Modeling Language. (1998)