VBScript Tutorial
A child of the W3CSCHOOLS sites which has detailed information for new to intermediate techniques in VBScript. A great reference site.

irt.org
VBScript articles/tutorials

Creating customizable alert boxes using VBscript
Learn how to use VBScript to create alert boxes that can be customized in terms of its interface.

VBScript Tutorial
Basic VBScript tutorial and free code ready to be used.

WROX VBScript Tutorial
A WROX tutorial on client-side VBScript covering variables, objects, subroutines, functions, and forms.