Which Oracle Java EE tutorial I Should use? Java EE 6 Tutorial or Java EE 5 Tutorial?

Which Oracle Java EE tutorial I Should use? Java EE 6 Tutorial or Java EE
5 Tutorial?

References

Reference NO 1

http://docs.oracle.com/javaee/6/tutorial/doc/gexaj.html

Reference NO 2

http://docs.oracle.com/javaee/6/tutorial/doc/gipmb.html

Reference NO 3

http://docs.oracle.com/javaee/6/tutorial/doc/bnboy.html

Reference NO 4

http://docs.oracle.com/javaee/5/tutorial/doc/docinfo.html

Reference NO 5

http://docs.oracle.com/javaee/6/tutorial/doc/

Reference NO 6

http://stackoverflow.com/questions/15192537/which-oracle-java-ee-tutorial-i-should-use-java-ee-6-tutorial-or-java-ee-5-tuto

Reference NO 7

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Reference NO 8

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