Book excerpt: Over three and a half decades, Ted Conover has ridden the rails with hoboes, crossed the border with Mexican immigrants, guarded prisoners in Sing Sing and inspected meat for the USDA. His books and articles chronicling these experiences, including the award-winning 'Newjack', have made him one of the premier practitioners of immersion reporting. In 'Immersion', Conover distills decades of knowledge into an accessible resource aimed at writers of all levels.