7 links
APL-ASCII Transliteration
chilton.com
Jim Weigang's method for APL/ASCII transliteration explained. This has become a standard for web and newsgroup use.
Benchmarks of APL vs. Other Languages
chilton.com
Part of the answer to questions relating to APL performance.
Good Code/Bad Code & Looping
chilton.com
The title says it all. Every starting APL programmer (and many experienced ones) would do well to study this carefully.
Hello, World Page!
2.latech.edu
This site compares the standard "Hello World!" program in many different computer languages, including APL.
ParkeNet APL
parkenet.com
ParkeNet APL software: William R Parke provides some interesting APL-based tools and utilities