Beginning tonight at 18:00, Apple retail stores in CambridgeSide, Tysons Corner, Glendale Galleria and Valley Fair will kick off Wired Weekend, a four-day event sponsored by Wired magazine and Apple. Attendees are encouraged to bring their digital camera and a suitable USB cable to connect to in-store computers and experiment with iPhoto. An iBook will be given away on Thursday night, and digital cameras will be given away throughout the weekend. Discounts on printers and cameras will also be available throughout the weekend.