The most proven method for dreading hair is to knot the hair and add something to help it lock and come together. ChaCha.
Dredlocks are matted hair. You cannot make instant dreads. ChaCha again!
Backcombing, Twist and Rip, Twist and Pin, Twisting, Brush Rubbing, Dread Braiding and Neglect are methods to get dreadlocks.