Using the forums here is not much different than the previous forum- You can create topics and post replies just like in any other forum. One difference that you will notice is how some types of embedded content work.

The “BBCode” tags that you're used to will work the same way for images:

[img]http://url_to_image[/img]

The tags to embed Youtube and Vimeo videos will be different. Instead of

[youtube]http://www.youtube.com/v=video_id[/youtube]

the way to embed a video is now

[youtube:video_id]

and the same is true for Vimeo. You just need to supply the video ID and the forum takes care of handling the Youtube/Vimeo URL.