Figure Eight

 
This is the foundation knot for all the Figure Eight Family of knots.
   

Step 1 - Make a loop in the rope

   

Step 2 - Pass the working end completely around the standing part.

   

Step 3 - Insert the end of the rope back through the loop.

Step 4 - Dress the knot by pulling on both the working end and the standing part of the rope at the same time.