The following documentation is included with the standard log4j distribution and also browsable online:

• short manual,
• complete manual (commercial),
• javadoc documentation,
• LogFactor5 documentation,
• project history,
• FAQ,
• troubleshooting guide.

• Don't Use System.out.println! Use Log4j by Vipan Singla
• Add logging to your Java Applications by Kevin Brown
• OpenSymphony Logging Primer

If you would like your log4j-relateed article to be listed here, then please send a note to the log4j-user@jakarta.apache.org list.