Ok, the way I do it:

On the bottom of this page, do you see "Forum Jump"? Use that drop-down menu and choose the forum that makes the most sense. When you click on it, it will display a list of threads in that forum. At the top left, there SHOULD be a button that says "New Thread". Click on that.

At least that's how I do it.

Most folks wish I wouldn't or couldn't!