If you go into any forum, eg.
Forum Issues, and scroll to the bottom of the page, there are all the little icons for the various topics (or threads), Hot topic, Sticky topic, Topic you've posted in, etc.
You'll notice that the Sticky Topics icon has some shading, and will always be at the top of the forum.
Also good is the
Help Page, which is linked in the Menu Bar (along with Home, Search, ...)