There is no official "guide" published by the Watchtower Society specifically titled "Jehovah’s Witnesses and the United Nations" for free download. However, several primary documents and independent resources detailing the relationship between the Watchtower Bible and Tract Society and the United Nations (UN) from 1992 to 2001 are available online. Primary Documents and Official Records
For those who want a fully compiled resource, there are extensive books and documents available for free download. There is no official "guide" published by the