If you really want to learn tennis for a long time, I suggest you buy a new racquet since you can use it for few years! I will suggest you can take a look for these racquet : Head YouTek Instinct MP, Head MicroGel Extreme, Wilson K Six.One Team, Tecnifibre T-Flash 300 SpeedFlex. Esp. Head YouTek Instinct MP, this is a latest model and some shops on sales now, around $960. Also you can take a look on Yonex RDS 003, TW is on sales now and it cost $795 when order here. The above racquets are around 300g, not too heavy but have good control feel and give you some power, You can choose grip 2 or grip 3.