We do not expect you to know anything about yoga. Just show up! It is like learning to ride a bike. After your tenth class you will be on your way.
The room is hot and you will be working hard. It will take a few classes just to get used to being in the heat. Do not give up! We all experience it. It is a process with great rewards. You will soon discover the heat is a powerful tool to open and detoxify your body and mind, unlike anything else.