Buddy Press site help

I have a new buddypress site, with 500 people on it, but low interaction. I wondered if you had any ideas on plugins that would help me make the site easier to navigate and interact on.

We have groups in place, and content being added, but all of the updates just telling people that we have new members, drowns what we are doing from a content perspective.

We also use the site to help with support for our live learning courses, does anyone have solutions for having content on their site in the style of an LMS?