Once you have a class all picked out, here's how to have the best experience possible
Check for requirements. The studio may ask you to fill out a first-timer form and waiver before class, or recommend that you take a certain class if you are brand new to yoga. Check the studio website for this information, and call if you have further questions.
Save your big meal for after. It's better to practice yoga when your stomach isn't full. A stuffed belly can make all that twisting and deep breathing uncomfortable and limit your potential. If you are starving and it's close to class time, grab something small and easy to digest, like a piece of fruit that will hold you over.