If you're a little uncomfortable with the new format, check out the "Display Modes" options. At the top right of every discussion there's a link that says "Display Modes". If you click on that link a dropdown will appear with the following options: Linear Mode, Hybrid Mode, and Threaded Mode. The default is Linear Mode. Our old forums were "threaded". I've been using the "Hybrid Mode" on these forums. I think it's the best of both worlds.
Explore the features here. There are lots and it definitely takes some time to get to know the system. But once you start to understand it it's really beautiful.
John