As the name implies, this is the most basic knot you can tie. One thing to pay attention to is that this knot begins with the back of the tie facing up. Also, because of the minimal steps required, it's best worn with a short tie (or on a taller man).

Some general tips: Make sure that the wide end of the tie is at least as long as the narrow end, and that the tip of the wide end hangs between the top and bottom of your belt buckle. This may require multiple attempts.