philadelphia tennis enthusiasts?

hello,

i am new to the philadelphia area and would love to hear about some of the cool, interesting, unpopular tennis-related (and otherwise i suppose) happenings in the city. where are the good spots to hit? where do you buy your racquets? shoes? strings?

i really do miss playing on a consistent basis and i would love to play year-round (if my wallet will let me do so). anyone know of a reasonable indoor court? what about winter leagues? drills? cardio tennis?

i have a lot of questions. i hope someone has a lot of answers!

thanks!

- greta