Some useful JSR-168 resources

While trying to figure out the essentials of portlet development, I found few useful resources on this topic:

• Introduction to JSR 168—The Java Portlet Specification (pdf)
• Understanding the Java Portlet Specification
• I18n in portlets
  

Here goes a mindmapped extract of those two:

Scrum and XP from the Trenches

Just finished reading a book by Henrik Kniberg. I found it really exciting and fun to read (at least, in Russian translation). Thank you, Henrik, looking forward to read more of your books :)

Short extract follows: