I've used 3 different colours in the tutorial just to show where each thread ends up. For the outside pieces of thread you will need about a metre of each and for the middle thread about 11 inches will do.
I have not added beads in this tutorial to this bracelet but adding beads will shorten the length of thread needed but I tend to keep to the same length starting off rather than run out of thread near the end.
I'm using 1mm waxed cotton cord here but you can use a variety of cords and threads in different finishes and colours. It just depends on what look you are going for.
1: Start with your three pieces of thread.