New friend

How do I comfort someone? Is that even the thing I should do in this situation? I can listen, and of course I did, but that was because I didn't know what else to do. I guess this is in fair part because I haven't known them long enough to situate myself with the intricasies or how they behave and what makes them feel better and what is too much to handle. i feel anxious that my new friend doesnt…