I learned how to make friendship bracelets a couple years ago. The first thing that I learned was that there wasn't just one kind of knot to make a friendship bracelet, there were 4 different kinds. In this Instructable I will show you how to do the four different kinds of knots and what they will look like on a friendship bracelet pattern.
I learned how to do all this and more at friendship-bracelets.net
The first thing you want to do is gather some supplies. You will need tape or a clipboard, some embroidery floss or yarn of two different colors (remember this is just for practice so I recommend using yarn), some scissors, a ruler, and yourself (or another person who can do the work for you).
Now take the first yarn and cut a piece about 8 inches long. Do the same thing to the other color.
Next, put the two strings together and tie them together into a normal knot (overhand knot).
Now we tape the top part (the part with the knot) down to a table or clip it onto the clipboard.
Now, the first knot I'm going to show you is called the forward knot.
Take your FIRST string and put it OVER the second string so that it makes a 4.
Now, take the tail and tuck it UNDER the second string.
Pull the knot tight.
This makes half a knot.
Now do steps 5 and 6 one more time so that you have done it a total of two times (use the same string you used the first time just pull it over).
This makes one full forward knot.
On a pattern the forward knot will look like the images shown.
Next, either tape that knot down or pull it up on the clipboard and pretend that it doesn't exist (it was exiled D:).
You also have the option of undoing the knot if you would like.