One great way of learning is through experience. When you service other people you are interacting with others and gaining life experiences. This can help you learn many different things, not just about a certain topic, but yourself as well.  Learning through service is a different kind of experience that isn't just a teacher lecturing at you in a classroom. It is a less obvious way of learning that can be very beneficial. Personally, I learn better when it is through my own experience, so learning in this way, for me, would be very helpful and something I am looking forward to.