Hi,
The book market is pretty immature still for portal/portlet development.
If you cant find what you want from Amazon then
you should still be able to find all the info your after on the web especially in places such as the Websphere Portal Zone (other resources link on main portal forum page). This info is still relevant even if your not a Websphere shop (lots of 168 and general stuff around development).
Ive got some other good resources which are on my machine at work. I'll post them when I go in Monday.
Cheers
Rob
"Delivering systems from the glass to the arse!" [ June 17, 2006: Message edited by: Rob Doughty ]