Will you share your experiences with Overseas Humanitarian Work?

I want to know if anyone on Fluther has any experience doing overseas humanitarian work? I will graduating in May, and before I pursue a job or graduate school, I wanted to spend 3–6 months overseas doing some form of humanitarian work. However, I have NO idea where to begin. If you have any experience with overseas humanitarian work, will you tell me about your experiences, the organization you were part of, etc.