The truth is, political activity might not be for you. Not everyone has a burden on their heart to make the world a better place. If you are one of those people, you could be wasting your time.
However, the fact that you are on this page, learning about the OK Grassroots Project, means that you must have some interest. So the question might be better framed: How will I benefit if I invest time and energy in this? And will I enjoy myself doing so?
The direct benefit comes to you is that participating in this project gives you a way to help provide a better future for your children and grandchildren. If you study the plans laid out on this site, you should be able to see how an informed, trained, grassroots political force can result in better political representatives and a transformed State government.
Participating should be rewarding and fun. Getting together with like-minded neighbors, working for a common cause on local issues, most always brings great satisfaction to those involved. They key is to find out what you're good at (or want to get better at), and do that, while have fun while doing it. The pay is lousy, but the benefits are large!