Few blogs which I read occasionally
Bobby Woolf: WebSphere SOA and J2EE in Practice
Bill Newport , WebSphere & Distributed Computing
Ali Arsanjani, Chief Architect SOA & Web Services, IBM
Grady Booch Software architecture, software engineering, and Renaissance Jazz
Sanjay Bose: SOA, ESB and beyond
Some more links
AIXPert:
WebSphere XD
SOAnderful
Also the following samples are most useful if you are working on WebSphere Process Server & WebSphere Integration Developer.
http://publib.boulder.ibm.com/bpcsamp/
http://www-128.ibm.com/developerworks/offers/lp/helloworld/
