Add the flour to a medium sized mixing bowl and create a divot or well in the center of the flour. Use your fingers to mix together the yeast, sugar, and 1/2 cup of the tepid water in a separate bowl. Pour the yeast mixture into the well in the flour and drizzle the olive oil around the edges. Use your hands to stir the mixture in a circular motion until a shaggy dough forms. If the dough holds together, you won't need the extra water. If it needs a little help becoming cohesive, drizzle in 1 tablespoon of water at a time, mixing, until it holds together. Flour a countertop and turn the dough out on the surface, kneading until it becomes smooth and elastic. You may scatter additional flour if needed to keep it from adhering to the surface of the counter. Form a tight dough ball by stretching the top under the ball of dough, turning a quarter turn clockwise and repeating until you have a smooth ball of dough. Place smooth side up in the same mixing bowl you used to stir it together. Cover with a tea towel and let rise for 2 to 3 hours in a warm, draft-free place.