PVT PLT EXPERIENCES DIFFICULTIES IN COM WITH THE TWR AT A CTLED ARPT.

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I DEPARTED MY HOME ARPT LATE AFTERNOON IN A C172. THE PURPOSE OF THIS FLT WAS TO INCREASE MY TOTAL XCOUNTRY FLT TIME AND NIGHT CURRENCY AS THE FLT WAS PLANNED FROM MY HOME ARPT TO AN ARPT UNDER CLASS D AIRSPACE TO ANOTHER ARPT UNDER CLASS D AIRSPACE AND BACK TO HOME WITH MORE TKOFS AND LNDGS AT MY HOME ARPT. I DEPARTED MY HOME ARPT'S AIRSPACE AFTER 1 TOUCH-AND-GO; CLBED TO 4500 FT MSL AND TUNED TO THE APCH FREQ TO RECEIVE FLT FOLLOWING. THE FLT TO THE FIRST ARPT UNDER CLASS D AIRSPACE WAS UNEVENTFUL. I RPTED WHEN I HAD THE ARPT WELL INTO SIGHT AND WAS IMMEDIATELY XFERRED TO TWR. FROM THE TWR; I HEARD AND CONFIRMED TO HAVE PERMISSION TO ENTER A R DOWNWIND FOR RWY 25. ONCE I WAS VISUALLY 45 DEGS FROM THE APCH END OF RWY 25 ON DOWNWIND LEG; I CONTACTED TWR. ME: 'THIS IS CESSNA N-NUMBER. HAVE I BEEN CLRED TO LAND?' TWR: 'N-NUMBER CLRED TO LAND RWY 25' IS WHAT I RECALL HEARING OVER THE RADIO. I IMMEDIATELY TURNED L BASE; BEGAN MY DSCNT; AND SHORTLY THEREAFTER TURNED FINAL FOR RWY 25. I NOTICED I HAD TO CRAB THE ACFT NEARLY 10 DEGS TO THE R AS THE WIND WAS RPTED TO BE 310 DEGS AT 17 KTS. BY NOW THE SUN WAS ONLY A FEW DEGS ABOVE THE HORIZON AND TO MY R BY ONLY A FEW DEGS; PLACING THE SUN DIRECTLY IN MY FIELD OF VISION. I WAS GLAD I WORE MY SUNGLASSES. THE WIND AND THE SCRATCHES AND BUGS ON THE WINDSHIELD ADDED TO THE COMPLEXITY. FROM AN ESTIMATED 25 DEGS L OF CTR VISION TO AN ESTIMATED 150 DEGS R OF CTR VISION I WAS ALMOST TOTALLY BLINDED. NEVER BEFORE HAVE I HAD SUCH TROUBLE WITH THE SUN. MY BODY WANTED TO PANIC; BUT I CONTAINED MYSELF. I TRIED LOCATING THE CTL TWR STRUCTURE; BUT I COULDN'T. I DECREASED MY DSCNT RATE AS I GOT LOWER TO THE RWY BECAUSE AS I GOT CLOSER TO THE GND THE SUN AND GLARE GOT WORSE ALMOST EXPONENTIALLY. MENTALLY; I JUDGED BTWN AN ABORTED LNDG OR A HIGH DSCNT RATE LNDG BECAUSE I NOW HAD TROUBLE GAUGING ALT. I FLARED A LITTLE TOO HIGH; SO I ADDED A TOUCH OF PWR AND GLIDED A LITTLE WAYS DOWN THE RWY. EVENTUALLY; I FELT THE WHEELS GRAB AS I PASSED A TXWY ENTRANCE; NOT KNOWING HOW MANY I HAD ALREADY PASSED. I BOUNCED I THINK TWICE BEFORE I FULLY GAINED CTL. TWR; 'N-NUMBER; WHICH FBO ARE YOU USING?' I PAUSED FOR A FEW SECONDS NOT SURE AS TO WHAT HE MEANT BY 'WHICH FBO' AS I DIDN'T NEED FUEL OR ANY OTHER SVC. AT THIS POINT I RECALL EXPECTING THE TWR TO TELL ME WHICH TXWY TO TAKE TO CLR THE RWY. ME: 'THIS IS N-NUMBER; I JUST WANT TO TAXI BACK; CHANGE MY FLT PLANS AND DEPART.' I RECALL A PAUSE OR COM TO OTHER ACFT FROM THE TWR AS I WAS MOVING VERY SLOWLY DOWN THE RWY NOW JUST PASSING ANOTHER TXWY ENTRANCE. I WAS STILL EXPECTING TO HEAR A TXWY TO EXIT TO BUT THE TWR NEVER TOLD ME TO EXIT YET. TWR: 'N-NUMBER; WHICH FBO ARE YOU USING?' HE CALLED AGAIN IN A FRUSTRATED TONE. I RECALL THINKING THERE MIGHT BE AN FBO TOWARDS THE END OF THE AIRFIELD. SINCE MY ENTIRE R-HAND VISION WAS BLOCKED; EVEN THOUGH I HAD COMPLETED MY FLT PLANNING; I HAD TOTALLY FORGOT THERE WAS ANOTHER FBO TO MY R. MENTALLY; TO ME; IT WAS LIKE ONLY WHAT I COULD BARELY MAKE OUT FROM MY L-HAND SIDE WAS ALL THAT EXISTED. ME: 'THIS IS N-NUMBER; I JUST NEED TO TAXI BACK. SWAP MY FLT PLANS AND TAXI BACK FOR DEP.' I THINK I RECALL STUTTERING A LITTLE. I BEGAN TO PANIC A LITTLE BECAUSE I WAS CONFUSED AND THE TWR CTLR HAD GOTTEN ANGRY. SOMEWHERE AROUND THIS TIME I JUST GAVE UP AND I REQUESTED PROGRESSIVE TAXI AT WHICH POINT I WAS ABOUT 20 FT AHEAD OF THE TXWY I HAD SLOWLY PASSED. DURING THIS TIME PERIOD THERE WERE OTHER COMS BTWN ACFT AND THE TWR. FINALLY THE TWR YELLED OVER THE INTERCOM. TWR: 'N-NUMBER; I NEED YOU TO EXPEDITE OFF THE RWY RIGHT NOW! EXPEDITE OFF THE RWY!' I REPEATED 'N-NUMBER EXPEDITE OFF THE RWY' IN A SHAKY VOICE. I JAMMED THE THROTTLE; TURNED COMPLETELY AROUND AND EXITED RWY 25. I RECALL THE WHEELS SKIDDING AND SCREECHING AS I DID EXPEDITE FROM THE RWY. IT WAS AT THIS POINT I FINALLY LOCATED THE CTL TWR. SIMULTANEOUSLY THE CTLR HAD ME CHANGE MY FREQ TO; I THINK; GND CTL. IT TOOK ME; I THINK; APPROX 45 SECONDS TO CHANGE FREQS BECAUSE I WAS BUSY CTLING THE ACFT AND FRUSTRATED AND SCARED TOO. WHEN I DID GET TO THE FREQ I THINK I RECALL THE TWR ALREADY TALKING SAYING 'HAVE YOU GOT YOUR FREQ CHANGED YET?' OR 'ARE YOU ON GND YET?' OR SOMETHING LIKE THAT. I DON'T EVEN KNOW IF HE WAS TALKING TO ME OR NOT. I RPTED THAT I WAS ON THE NEW FREQ. TWR; 'HOW NEW ARE YOU TO THIS?' I HAD ACQUIRED MY PVT LICENSE AT MY HOME ARPT AND THAT WAS WHERE MOST OF MY TRAINING WAS CONDUCTED. I HAD ONLY A FEW HRS OF TOWERED ARPT EXPERIENCE COMPARED TO MY TOTAL NUMBER OF FLT HRS. SO I GAVE AN HONEST REPLY. ME: 'I'M FAIRLY NEW.' I DON'T REMEMBER THE TWR CTLR'S EXACT WORDS. I RECALL THE TWR VERY ANGRY AND I UNDERSTOOD HIS REPLY TO THE FOLLOWING EFFECT. TWR: 'WHEN YOU LAND YOU GET ON AND OFF THE RWY! WE CAN'T HAVE YOU STOPPED IN THE MIDDLE OF THE RWY WITH OTHER ACFT LNDG BEHIND YOU. WE CANNOT HAVE THAT! YOU LAND AND GET OFF THE RWY! DO YOU UNDERSTAND?