/lit/ - Literature

Okay, so I just started Greek: An Intensive course today and I'm already pretty stumped. It opens with showing me the Greek alphabet, and identifying which ones are and aren't vowels. It then goes through rough and smooth breathing, along with long and short vowels. It then says I am ready for a pronunciation excercise on page 11. The drill consists of 54 Greek words I have to pronounce. How am I supposed to do that? It's only told me the names of the letters, not the sound they make. For example, how am I supposed to know what sound omega makes when I read it on the page? Pic related is the alphabet guide, will post the excercise in question next.