HI, there. I think she is talking about the tails that are on the "top" when you're finished stitching. You need to thread them into a needle & pull to the back to tie off.
I use a GIANT-eyed needle that has a sharp point. I think it came in an assortment of needles for crafts. I remember there were 2 curved needles & several large ones, including one for leather. I fold the thread over the eye of the needle & then slide the eye over the little bundle of looped threads.
Edit - I see we are still #2!