Informix Zone site (very cool)
http://www.informix-zone.com/informix-at-ibm
http://www.informix-zone.com

Online manual of informix.
http://publib.boulder.ibm.com/infoce...v111/index.jsp

Download all manuals (free of charge) :
http://www-306.ibm.com/software/data...ubs/library/#3

IDS Support page:
http://www-306.ibm.com/software/data...x/ids/support/

IDS Support page - Technotes articles - very very useful!
http://www-1.ibm.com/support/search....A800+DB560&dtm

IBM Developer Works - Articles & Tutorials (select product Informix) - very very useful!
http://www.ibm.com/developerworks/views/db2/library.jsp

Redbooks - Objectives manuals...
http://www-1.ibm.com/support/search....4A20+DA700&dtm

IIUG - Internation Informix User Group
http://www.iiug.org/
http://www.iiug.org/forums/technical.php

USENET News - comp.database.Informix ( the best! )
http://groups.google.com/group/comp....pics?lnk=gschg

IBM Blogs
http://www-128.ibm.com/developerwork.../page/idsteam/
http://www-128.ibm.com/developerwork...page/gbowerman
http://www-128.ibm.com/developerwork.../page/roundrep

IBM Webcasts
http://www-306.ibm.com/software/data/informix/webcasts/

IBM Developer Works - Informix
http://www.ibm.com/developerworks/db...mix/index.html

IBM - Lifecycle dates, support products
http://www-306.ibm.com/software/data/support/lifecycle/