What do i need to begin?

All you really need to begin practicing yoga is your body, your mind, and a bit of curiosity. But it is also helpful to have a pair of sweat pants, leggings, or shorts, and a t-shirt that's not too baggy. No special footgear is required because you will be barefoot. It's nice to bring a towel to class with you. As your practice develops you might want to buy your own yoga mat, but most studios will have mats and other props available for you.