The best place to park is Penn Park (31st & Lower Walnut St) $12 for the day.
http://cms.business-services.upenn.edu/parking/where-to-park/visitors-and-vendors.html
Basketball shoes, basketball shorts, basketball t-shirts (reversible jersey will be provided), plenty of socks, water bottle, and shower supplies.
The Palestra & Rockwell Gymnasium:
223 S 33rd St, Philadelphia, PA 19104