It's one of the most commonly asked questions we get via email to Boards.ie so I'm hoping this helps the people who need to know.
To start a new thread, look to the top left of the screen under the Boards.ie logo and the menu bar that reads "User CP", FAQ", "Community" etc. You should see it there.
As in the image below.
Don't forget too about our FAQ section.
I hope that helps!