Analyse the suffering of Olaudah Equiano through the journey of his slavery

This would require a very lengthy answer, and this is a short answer question forum. You might want to begin with Gradesaver's summary of the novel, and then go through the available analysis for the different chapters. I have provided a direct link to the short summary below.

http://www.gradesaver.com/the-interesting-narrative-of-the-life-of-olaudah-equiano/study-guide/short-summary/