There probably isn't much left, on the lighter side, to be said about being Jewish in America. Golden and Levenson have levitated the Lower East Side into ritualized folklore; Roth has stuccoed a Babylonian sexual captivity into an edifice where all may enter; Jackie Mason provides for TV the apex ad nauseam. However, Mr. Vorspan, Director of Social Action in the Union of American Hebrew Congregations, limns the amorphous state of ethnic being again, Levenson-fashion. The how-to's of Jewish meetings, temple building, fund raising, child raising, visiting Israel, public relations, etc. are mildly amusing, but generally familiar in emphasis. (The next author that distinguishes between shlemiel and shlimazel is a shmo.) The author is best at teasing groups and the machers and non-machers therein--apparently he is experienced in meeting-dynamics. But occasional winners are rare.