STUDENT PLT BECOMES DISORIENTED ON FIRST SOLO XCOUNTRY. CLASS C AIRSPACE WITHOUT CLRNC IS RESULT.

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ON MY FIRST XCOUNTRY SOLO FROM LGB TO F70; ON THE RETURN TRIP TO LGB I BECAME DISORIENTED LEAVING F70 ARPT WHILE ATTEMPTING TO FIND MY RTE FOR THE LEG OF MY FLT FROM FRENCH VALLEY TO CORONA. ON THE GND AT FRENCH VALLEY; I HAD TO ADJUST MY RTE OF DEP SHORTLY BEFORE TKOF. WHEN I LEFT F70; I MADE A WIDE XWIND LEG. THEN I BEGAN A DOWNWIND DEP AND FLEW TOO FAR N. I DID NOT ESTABLISH MY RTE BTWN LAKE ELSINORE AND A BODY OF WATER AT A NEARBY GOLF COURSE. THERE WAS SOME HAZE AND MODERATE TURB BTWN CORONA AND FRENCH VALLEY THAT DAY. MY INSTRUCTOR SAID EARLIER THAT I WOULD HAVE TO GET USED TO FLYING IN SOME TURB. I WAS HAVING SOME TROUBLE CTLING THE PLANE WHILE READING THE MAP AND THE FLT PLAN. I MISREAD FEATURES ON THE GND AND FLEW N PARALLEL TO MY INTENDED RTE AND ACCIDENTALLY ENTERED CLASS C AIRSPACE FOR MARCH AFB. UPON REALIZING MY ERROR; I TURNED L BEFORE REACHING LAKE MATTHEWS; WHICH SHOULD HAVE BEEN ON MY R SIDE FOR THIS LEG OF THE FLT. I MAY HAVE PUT ADDED PRESSURE ON MYSELF; REMEMBERING THAT MY INSTRUCTOR TOLD ME THE SCHOOL NEEDED THE PLANE BACK BY XA00 LCL FOR ANOTHER STUDENT. IMMEDIATELY AFTER LNDG; I INFORMED MY INSTRUCTOR OF MY ERROR.