In a large mixing bowl, stir together the flour, yeast, and salt. Then add the water and olive oil and stir until a stiff, shaggy dough develops -- about 30 seconds. Tip the dough onto a non-floured surface. (If the dough is too sticky to knead, grease your work surface and your hands with olive oil.) Knead the dough until it becomes smooth and elastic -- about 10 minutes. Grease the mixing bowl with olive oil. Add the dough to the bowl, and then flip the dough to grease its other side. Cover the bowl with a damp towel. Allow the dough to proof in a warm location until it has doubled in volume -- about 2 hours.