Some recent articles that could be useful:
http://www.jw.org/en/publications/magazines/w20130415/do-not-tire-out/
(this one contains the organisation structure pictures)
http://www.jw.org/en/publications/magazines/w20130415/make-sure-of-the-more-important-things/
http://www.jw.org/en/publications/magazines/w20130715/who-is-faithful-discreet-slave/
http://www.jw.org/en/publications/magazines/w20131115/obey-jehovahs-shepherds/
http://www.jw.org/en/publications/magazines/w20140515/moving-ahead-jehovahs-organization/
http://www.jw.org/en/publications/magazines/w20140515/jehovah-god-organization/
And this one relating to disfellowshipping:
http://www.jw.org/en/publications/magazines/w20150415/disfellowshipping-a-loving-provision/