Howdy, Danni! First of all, I posted on your last post that introduced you, please read it, I think it will help. You are also asking wonderful questions but explaining them are a little complicated.
Example: Jehovah's Witnesses believe in a total non-smoking policy. Very good policy, but it isn't really justified in the bible. If you want more questions answered ask to look at the "Reasoning from the Scriptures Book". If someone doesn't give it to you, go to the library in the Kingdom Hall, it's a little brown book. The reasoning on smoking can be found on page 109. Here it is right from the book:
Why do Jehovah’s Witnesses view tobacco smoking as such a serious offense?
It shows disrespect for the gift of life
Acts 17:24, 25: “The God that made the world and all the things in it . . . gives to all persons life and breath and all things.”
“The evidence that cigarettes shorten life is overwhelming; the causal connection is as firmly established as any in medicine.”—Science 80, September/October, p. 42.
Reports show that in the United States the annual death toll from smoking has been tabulated as being 300,000; in Britain, 50,000; in Canada, 50,000. “More than one million people die annually because of smoking-related disease and the Third World, which accounts for 52% of world tobacco consumption, is making up a rapidly increasing proportion of those deaths.”—The Journal (Toronto), September 1, 1983, p. 16.
Former U.S. Secretary of Health, Education, and Welfare, Joseph Califano, said: “Today there can be no doubt that smoking is truly slow-motion suicide.”—Scholastic Science World, March 20, 1980, p. 13.
It is not consistent with what God requires Christians to render to him
Rom. 12:1: “I entreat you by the compassions of God, brothers, to present your bodies a sacrifice living, holy, acceptable to God, a sacred service with your power of reason.”
The surgeon general of the United States, C. Everett Koop, said: “Cigarette smoking is clearly identified as the chief preventable cause of death in our society.” (The New York Times, February 23, 1982, p. A1) “Medical studies show that . . . the average life expectancy of a smoker is three to four years less than that of a nonsmoker. The life expectancy of a heavy smoker—a person who smokes two or more packages of cigarettes a day—may be as much as eight years shorter than that of a nonsmoker.” (The World Book Encyclopedia, 1984, Vol. 17, p. 430) Is it proper for a person to present his life for service to God and then slowly to destroy that life?
“Smoking is so devastating, especially to the heart and lungs, that the other aspects of preventive medicine become comparatively insignificant if the person smokes.” (University of Southern California News Service, February 18, 1982) “Smoking is probably the largest single preventable cause of ill health in the world.” (Dr. H. Mahler, director-general of the World Health Organization, in World Health, February/March 1980, p. 3) Is it consistent for a person to present himself to God for sacred service and then deliberately to ruin his health?
Smoking is a violation of the divine requirement that we love our neighbor
Jas. 2:8: “You must love your neighbor as yourself.”—Compare Matthew 7:12.
“A recent study . . . revealed that the nonsmoking wives of men who smoke die on the average four years younger than women whose husbands are also nonsmokers.” (The New York Times, November 22, 1978, p. C5) “Smoking during pregnancy can cause congenital malformations so severe that either the fetus dies, or the infant does shortly after birth.” (Family Health, May 1979, p. 8) Such unloving treatment of family members is clear evidence that a person is not acting as a Christian.—Compare 1 Timothy 5:8.
“Studies have shown that since the average smoker actively smokes his cigarette for only a small portion of the time it is lit, a nonsmoker may actually be forced against his will to breathe almost as much carbon monoxide, tar and nicotine as the active smoker sitting next to him.” (Today’s Health, April 1972, p. 39) A person who is thus unloving toward his fellowman does not give evidence of loving God either.—See 1 John 4:20.
Adding on to Question 1: The specific places that you can find "Jehovah" in the King James Version of the bible is Exodus 6:3, Psalms 83:18, Isaiah 12:2, 26:4 (notice all these scriptures are from the Old Testement). New World Translation (the bible the Jehovah's Witnesses favor) has "Jehovah" in the New Testement, however they admit that it didn't show up in the existing, ancient Greek manuscripts. This topic is also in the reasoning book on page 191.
Adding to Question 2: Marks of an apostate: seeks to make others their followers, (thus causing sectarian divisions), do not want to go door to door, rejecting his visible organization (In this case, the Organization of Jehovah's Witnesses), abandon the true faith (according the JW's interpretation), and talking to an apostate (including people at this forum) would make you an apostate. This is according to their induction and inference, but not specifically explained in the bible. See this topic in the reasoning book on page 34. Only through their induction and inference of scriptures can they answer many of your questions. Apostasy, according to the bible, is straying away from the teachings of Christ or denying Christ. The interpretation of what Christ says varies widely. The Jehovah's witnesses believe that they have the only true faith and that their interpretation is the only true one. If you do not believe their belief exactly then you are an apostate.