Complex sentence: His affluent parents were determined to prepare Johnson and his brother for the challenges of life by providing them with the opportunities afforded to sighted children, arranging for their sons to receive a good education and "proper instruction" and teaching them self-sufficiency.
Split into simpler sentences: His affluent parents were determined to prepare Johnson and his brother for the challenges of life by providing them with equal opportunities afforded to seeing children. Johnson's parents arranged for their sons to receive a favorable education and "proper instruction" and taught them self-sufficiency.