I won't show you every single feature, but I will insist on the key benefits: you don't have too much time to spend, and you want to fully utilize that excellent platform.
As usual, the first step is to create your profile: that is the most important step in terms of visibility. (video)
Then, I will invite you to check the video you will find at the end of the post!
In this video, I will cover the following features of the interface -> Welcome page, Members forum, Job Forum, Calendar, Buddies, Files and Directory.