Without knowing the age or grade of your brother, it's difficult to direct you to very specific articles tailored to his developmental or academic level. However, I would recommend that your mom or dad spend some time in this section of our site to learn ways to help motivate your brother in his studies: http://www.education.com/topic/child-motivation-achievement/
I also noticed that you marked your question as related to "special needs." If your brother has a learning disorder, this is another section of our site that I'd also recommend for your parents to help your brother: http://www.education.com/topic/special-needs/
I wish your family well in helping your brother succeed at school, and if you are still a student, I hope you too benefit from this information.