In order to make a 2 knot friendship bracelet, you need to anchor about 10 strands of yarn. Separate out 2 strands. Then, one by one, make a simple knot using the remaining strands. The knot is similar to the way you would tie your shoes. Simply, interlace them. Tie it first to the one nearest it. Then, tie it to the next one. Then set it aside. Continue working your way through, until each thread has made a knot in each of the two strands. Make sure that you tie each knot neatly. They will be visible. The knots form the decoration. So, you will have to tie them neatly to get a good result.