how do i get a member badge
Not sure what you mean. If you are here to learn, you will earn badges for each completed module. If you just want to rack up a bunch of badges for your activity on the forums, I have no advice to give since I've never paid attention to badges. We have had some members in the past who made a game of collecting badges, but that just caused disruption and a good lot of their activity would have been removed. Add value to these forums and be a thoughtful community member and the badges will come along.