One of the hardest things to do is engage your users. I have learned along the way, that creating great content that is engaging and allowing your users to engage is the single most important thing you can do. Create programs that allow you to do a lot. Take a look at my blog I create this weekend. I hope it's helpful. https://chrisdetzel.com/online-community-blog/f/how-to-increase-online-community-engagement-strategy-and-tactics