The Question and Answer section for One Hundred Years of Solitude is a great resource to ask questions, find answers, and discuss the novel.
The novel is presented in chronological order.
The novel has no specific "hero" in my opinion. Each generation has its own protagonist, and all of the novel's protagonists are members of the Buendia family.
As for the last part of your question,...
Please give me the answer.
You need to provide a chapter and a quote from the text so I know exactly where you are referring to.