Help?

[debka_notion]

Can anyone describe the knot used in tying tzitzit for me? I've read a series of sets of instructions which describe it using a. an incomprehensible picture, b. the term "double knot", and/or c. the term "granny knot". Unfortunately, I don't know if these are all the same thing, different things/different customs for tying, or what. Can anyone fill me in? OTherwise I'll see if I can find something at work tomorrow, but all our rabbis are either off in Israel right now, or don't really come in in the summer.