In a large mixing bowl or the bowl of your stand mixer fitted with a hook attachment, combine the yeast and warm water. Stir it around and let sit for 5 minutes of until the yeast is foamy and dissolved. This is called "proofing" the yeast. If the yeast doesn't dissolve, your yeast is dead. Start again with active yeast. Add flour, olive oil, salt, and sugar. Mix by hand or with the dough hook on low speed for 1 minute.