According to the student's flight instructor (CFI), he (the CFI) had informed ground control that the student was going to be on his 1st solo flight and was going to fly once around the pattern. Reportedly, this radio call was made before the CFI deplaned after dual instruction. The student thought that the CFI's advisory would be coordinated with local control. Therefore, he did not advise that he was a student pilot on his initial call for takeoff clearance. After takeoff, the student was advised to remain outside the control zone, due to numerous inbound aircraft. He departed for a time. Subsequently, he was cleared to report overhead to enter a downwind, but reportedly, he did not call until on a downwind. On base, he made a 360 degree turn to avoid a possible conflict with other traffic without contacting the tower. While maneuvering, the aircraft entered a stall/spin. The student recovered approximately 150 feet above ground level, then attempted to land on a road. To avoid cars, he turned away, but collided with a power line pole.