Quick google search turns up:
http://gislounge.com/arc-macro-language-aml/
This site has links to good resources.
Some with tutorial style info:
http://gis.washington.edu/phurvitz/arc_lms/week9.html
http://www.fsl.orst.edu/helpdesk/gis/aml.pdf
Ah, I miss using AML...