The Question and Answer section for A Long Way Gone is a great resource to ask questions, find answers, and discuss the novel.
The boys sell their school supplies to vendors.
"They lay on the ground in different postures of pain, some reaching for their heads, others curled up like a child in a womb, frozen." Simile
"The eyes of the nearly dead are redder than the blood that comes out of them." Metaphor
The "open metal box" is an elevator. Beah encounters this "box" in New York, where he has traveled to interview to address the UN about the problems facing children in Sierra Leone.