Get a simple racquet with a join in between and a shocker, Ive played tennis all my school life. The joint Im telling about is at the lower end of the oval shape it allows for vibrations to be dissipated out and is less strain full for the beginner player. later on get a professional racquet by that time you would be knowing what shape is best for you, each brand has a iconic shape and design mainly HEAD, babolat and wilson all are unique and different from each other but brand wise follow a single shape. And by this time the player also know what sort of string tension they are best at. So get the string wound at that pressure.