IT Service Management

On-line Resources:

ITSM portal
ITIL open guide
ITIL community (forum)
IT Process Institute
BPM Institute
ThinkHDI
ISSSP

IBM developerWorks on AIX system administration

part 1: Installation
part 2: Management
part 3: Virtualization
part 4: Performance

Bonus: Scripting IBM AIX LPAR builds from A to Z in an IBM PowerVM environment