A good starting point is "Portlets and Apache Portals" by Stefan Hepper et al. It is a freely downloadable manuscript (requires you to create an account at the site though) of a book that was never published, but is a very good guide none the less. It is not JBoss specific but a good starting point.
thank you very much !
i want to study portal -jboss portal ,but i don't know where i should start,as you said ,i download this book and read a litte,i think it is a good book for me !
I really apriciate ur help, its a gud one for start! Thanks alot.
Thanks & Regards