Resources
Work in progress
IBM.com (IBM Corporation)
IBM Information Centers
IBM Product Information Centers - see also IBM i, C compilers, storage and every possible IBM product here
IBM Power Systems Hardware Information Center
IBM Redbooks
IBM documentation - miscellaneous about Unix/Linux/hardware
PowerPC Architecture Book, Version 2.02 (2005)
IBM Research - Research Hypervisor - open source since 2005; CVS is dead/down
A git repo of a fork of rhype (Research Hypervisor)
Resources for IBM customers
Ordering, activation, design, planning...
Power Systems Capacity on Demand
Capacity on Demand - Activation code search
IBM Prerequisite - compatibility information
Software downloads
Entitled software support (customers download AIX images)
AIX PTFs (you need to know the component IDs)
AIX eFixes/iFixes
Server Firmware and HMC code / installation Wizard for all POWER Systems by Rochester Support Center
Diagnostic CDs ("live AIX")
AIX Toolbox for Linux Applications
AIX Expansion Pack and Web Download Pack
NMON including nmon2rrd
fixes for obsolete versions (v3, v4, v5.x)
IBM employee blogs on AIX
AIXchange (Rob McNelly)
SecuringAIX (Michael AM Felt)
Chris's AIX Blog (Chris Gibson)
AIX Down Under (Anthony English)
AIXpert Blog (Nigel Griffiths)
3rd party and community backed resources
3rd party downloads
Michael Perzl - open source software packaged in RPM format
Bull Systems (German mirror) - fixes
University of Duisburg (DE) - 3party mirrors, bits of documentation, tools
BitSavers - some AIX v3.x PDFs
WU Wien (University of Economics) - old/outdated AIX fixes
University of Toronto - selected IBM Redbooks
Kenneth R. Saborio - AIX pre-5.x PDFs
Facts and features
IBM Power Systems performance reports
Mailing lists
AIX-L mailing list at the Princeton University
Forums
IBM developerWorks - AIX and UNIX
IBM developerWorks - AIX and UNIX - AIX Forum
IT Toolbox - IBM AIX-L (3party)
Community blogs and wikis
Midrange Wiki by Rob Berendt et al; iSeries, AS/400
Aixwiki by Mike van Hoof (Mik3yZ) et al
AIX wiki by Manu
AIXMind (formerly: aixblogs.blogspot.com) by Jason Liang - many pages copied without indication of source, see for example IBM.com vs AIXMind
WMDuszyk.com by Waldemar Mark Duszyk
AIX4Admins by Balazs
AIX documents by Marcus Majzel-Bennett aka amouse; assorted IBM documentation, mostly PDF
PowerVM.net by Pravin Nair, IBM (last update: 2010)
vnull's blog by Jakub Wartak
Operation Daily Magic Error by sbzx
http://aixhealthcheck.com/blog.php by Michael Meilink
SHIFT Wiki by Sjoerd Hooft
IBM AIX memo by Vincent Jamart (partially in French)
My survival notes... by Gilles Eberhardt (partially in French)
Unixskylab by unixskylab (last update: 2010)
KF Solutions AIX blog/tips by Rob Roos
Usenet
comp.unix.aix on compgroups
IRC
##aix on FreeNode - our channel, see also my page of information about the channel
Printed books
Redbooks: Every Redbook can be ordered as a hardcopy via IBM partner Vervante
Exploring IBM eServer pSeries by Jim Hoskins, 2003, ISBN 1931644047
Archives of documentation
http://cdn.preterhuman.net/texts/computing/rs6000/ - POWER3 and older (pre-2000) service/user manuals