Hey! I've just started writing tutorials for Game Maker Server. I have enough experience with it.
Here's the first tutorial. I'll keep update this post.
I have created a discord server for Game Maker: Server with hopes of a place where people can get real time feedback on their projects and questions. However, I have been struggling to spread the word about this and I am going to start personally inviting people to join such as yourself to help get the ball rolling. I think that a discord for this community would be a great way to really "increase" activity so to speak and I for one would like to see how this experiment turns out.