Put the yeast in warm water with sugar in a cup and turn untill bubbles come up.
Mix in a big Bowl the bread flour, yeast, salt and Olive oil, work with hands until the dough forms into a ball. If the dough is sticky, add additional flour, 1 tablespoon at a time, until the dough comes together in a solid ball, have to be soft and elastic not hard. Add one tps water if is hard. Put in a large bowl cover with towel and wait between 2/ 3 hours. If the environment is warm take less time to increase, if is cold it will take more time.
The dough have to become double of his size.
After 2 hours you can work with hands little more and cover leave for an other hour