STUDENT PLT MAKES A SE DEP FROM Q60 ARPT NEAR FAT ARPT. BASE OF CLASS C IS 1600 FT. RPTR CLBS INTO CLASS C AT 1800 FT WITHOUT COORD OR CLRNC AND CUTS OFF ANOTHER ACFT. RPTR WAS NOT ON FAT DEP FREQ AS YET. CONFESSES TO POOR PLANNING AND BEING UNQUALIFIED FOR XCOUNTRY FLYING.

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I TOOK OFF SIERRA SKY PARK (Q60) AT ABOUT XA25. THIS WAS MY FIRST FLT I CAN REMEMBER TAKING OFF ON RWY 12. AS I WAS CLBING OUT I WAS ALSO TURNING FOR A L DOWNWIND DEP. I TRIED TO CHK IN WITH FRESNO YOSEMITE INTL (FYI) DEP AND EXPERIENCED SOME DIFFICULTY COMMUNICATING WHILE CONFIGURING THE ACFT AND BECAUSE OF A SEVERE HEAD COLD I HAD. I DO BELIEVE I WAS ACKNOWLEDGED BY DEP. DEP THEN ASKED AGAIN WHAT MY INTENTIONS WERE AND WHAT TYPE OF ACFT I WAS FLYING. I THEN TRIED TO COMPOSE MYSELF AND ANSWERED; 'I WAS A CENTURION /R AT; 1500-1800 FT I DO NOT REMEMBER; OUT OF SKY PARK; DEST COLUMBIA AT 6500 FT.' THE CTLR CAME BACK WITH MY XPONDER CODE NUMBER. I CONFIRMED IT; AND HE QUICKLY ASKED ME IF I HAD SEEN THE TFC. I SAID 'NEGATIVE.' HE SAID THAT I JUST CUT SOMEONE OFF. AT THIS POINT I GOT NERVOUS AND FORGOT THE XPONDER CODE AND ASKED HIM TO REPEAT IT FOR ME WHICH HE DID. I CONTINUED ON FOR MAYBE A MIN OR SO AND HE CALLED ME; AND SAID I WAS TO CALL THE TWR BY PHONE WHEN I LANDED IN COLUMBIA. I COPIED THE NUMBER DOWN AND SHORTLY THEREAFTER HE TOLD ME TO SET XPONDER TO 1200 VFR. I CALLED THE TWR WHEN I GOT TO COLUMBIA AND ACCORDING TO THE ATC CTLR I ENTERED CLASS C AIRSPACE AND CAUSED A CONFLICT WITH A SMALL SINGLE ENG IFR ACFT LNDG ON THE BACK COURSE TO RWY 11 AT FYI AND THAT THIS WAS A VIOLATION. HE SAID I WOULD BE CONTACTED BY SOMEONE LATER. THE NEXT DAY I WAS CONTACTED BY AN FAA OFFICIAL. IT HAD BEEN A FEW MONTHS SINCE MY LAST INSTRUCTION AND AFTER I REVIEWED MY LOGBOOK I HAD MISTAKENLY THOUGHT THAT I HAD BEEN SIGNED OFF FOR MY XCOUNTRY TRAINING. I MUST HAVE SOMEHOW MISINTERPED THE CONVERSATIONS I HAD WITH MY INSTRUCTOR AND ASSUMED SINCE I HAD OVER 80 HRS IN THAT AIRPLANE I WAS SIGNED OFF TO DO MY XCOUNTRY TRAINING. HOWEVER; THAT WAS MY FIRST MISTAKE. THE SECOND MISTAKE WAS; I SHOULD HAVE MADE A R DOWNWIND DEP INSTEAD OF THE L WHICH WOULD HAVE HELPED ME AVOID THE APCHING TFC LNDG ON RWY 11 AT FYI. MY THIRD MISTAKE WAS THAT I SHOULD HAVE BEEN MORE AWARE OF THE AREA AND THE CLASS C AIRSPACE. THE FACT THAT FYI RWYS 11/29 AND SIERRA SKY PARK RWYS 12/30 ARE ONLY 8.5 MI APART AND SINCE I'VE ALWAYS TAKEN OFF TO THE N; I WAS UNCOMFORTABLE AND SHOULD HAVE CHKED IN WITH DEP SOONER. IN RETROSPECT; I SHOULD HAVE PLANNED AND KNOWN BETTER. IT'S EASY TO SEE THE NUMBER OF FACTORS THAT PLAY IN AN INCIDENT AFTER THE FACT AND HOW THEY COMPLICATE AND COMPILE THE ERRORS.