RWY INCURSION AFTER A PA28 PVT PLT GETS CONFUSED WHEN TAXIING TO ACTIVE RWY 28 AND HOLDS AT THE WRONG POS; XING THE HOLD SHORT LINE FOR AN INACTIVE RWY 4-22 AT SCH; NY.

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I HAVE LOGGED A MULTITUDE OF TKOFS AND LNDGS AT THIS FIELD OVER THE PAST SEVERAL YRS. ON THIS DATE; I TAXIED THE ACFT FROM THE NW CORNER OF THE FIELD TO AN AVIONICS SHOP LOCATED ON THE SW CORNER. AFTER THE AVIONICS WORK WAS COMPLETE; I WANTED TO PERFORM ONE FULL STOP LNDG BEFORE RETURNING THE ACFT TO ITS PARKING SPOT. I RECEIVED THE AWOS INFO; WHICH INDICATED THAT RWY 15/33 WAS CLOSED. NORMALLY; THIS RWY IS NOT USED FOR LNDG AND DEPARTING TFC; BUT RATHER AS A TXWY TO BRING ACFT TO THE APCH END OF RWY 28. I; THEREFORE; EXPECTED TO RECEIVE A TAXI CLRNC WHICH WOULD AVOID THE USE OF RWY 15/33. BECAUSE I HAD INITIALLY PLANNED ONLY ON HAVING THE AVIONICS WORK PERFORMED; I DID NOT HAVE MY USUAL COMPLIMENT OF FLT DATA ON BOARD. IN PARTICULAR; I WAS LACKING MY PUB SUBSTITUTE FOR THE AFD. IT CONTAINS DETAILED RWY DIAGRAMS IN ADDITION TO FREQ; ALT; PATTERN INFO; AND OTHER DETAILED DATA ABOUT EACH ARPT. I CONTACTED SCH GND; INDICATED THAT I HAD THE AWOS INFO; PROVIDED MY POS ON THE FIELD; AND STATED MY INTENTIONS FOR 1 FULL STOP LNDG. I WAS GIVEN 'TAXI TO RWY 28 AT TXWY B.' I BEGAN TAXIING ON TXWY A; TOOK A R ONTO TXWY B AND STOPPED AT THE RED RWY SIGNS; WHICH INDICATE BOTH RWY 4/22 AND RWY 10/28. I RECOGNIZED THIS POS AS A HOLD SHORT POS FOR RWY 4/22; HOWEVER; I WAS CONFUSED TO ITS SIGNIFICANCE WITH REGARDS TO RWY 28. RATHER THAN CONCENTRATE ON THE SIGNAGE; I WAS INSTEAD TRYING TO ENVISION THE RWY DIAGRAM AND ASSESS MY POS WITH REGARDS TO RWY 28. TXWY B IS A DIAGONAL TXWY WHICH DUMPS OUT ONTO RWY 4/22. IT DOES NOT DIRECTLY INTERSECT WITH RWY 10/28; BUT RATHER ONE MUST TAXI ONTO RWY 22 THEN TAXI A SHORT DISTANCE; AFTER WHICH ONE CROSSES ONTO RWY 10/28. WHILE HOLDING SHORT; I CONTEMPLATED WHETHER THIS WAS THE CORRECT HOLD SHORT POINT OR WHETHER I SHOULD BE HOLDING SHORT CLOSER TO RWY 10/28. I HAD NEVER TAXIED TO RWY 28 THIS WAY AND COULD NOT ENVISION EXACTLY WHERE I SHOULD BE WITHOUT THE RWY DIAGRAM. AFTER HOLDING SHORT FOR ABOUT 15 SECONDS; I HAD DECIDED THAT THIS WAS NOT THE PROPER HOLD SHORT POINT FOR RWY 28. I THOUGHT PERHAPS THAT TXWY B CROSSED RWY 22 AND SUBSEQUENTLY INTERSECTED WITH RWY 28. I CROSSED THE HOLD SHORT LINE; INTENDING TO CROSS RWY 22 AND CONTINUE ON TXWY B; WHICH CAUSED A RWY INCURSION ONTO RWY 22. THE GND CTLR ASKED ME TO HOLD MY POS; WHICH I DID IMMEDIATELY. HE INDICATED THAT I HAD CROSSED THE PROPER HOLD SHORT POS. I RESPONDED THAT I THOUGHT THE TAXI CLRNC ALLOWED ME TO CROSS RWYS AND TXWYS; ALLOWING ME TO CROSS RWY 22 TO GET TO RWY 28 AT TXWY B. HE WAS CONFUSED BY THIS; SINCE ONE CANNOT CROSS RWY 22 THERE; BUT TAXI ONTO IT AND TURN ONTO RWY 28. TXWY B ENDS AT RWY 22. THE CTLR TOLD ME TO HOLD MY POS AND PERFORM MY RUN-UP IN MY PRESENT POS. MY POS AT THAT TIME WAS STILL TXWY B; JUST BEFORE RWY 22; BUT BEYOND THE HOLD SHORT LINE ON TXWY B. WITHOUT THE RWY DIAGRAM; AND AFTER HEARING THE CTLR REFUTE MY ERRONEOUS CONTENTION ABOUT BEING ABLE TO CROSS RWY 22; I WS CONFUSED AS TO THE EXACT LAYOUT OF THE INTXN THAT LAY AHEAD. AT THAT TIME; I TOLD THE GND CTLR THAT I WISHED TO TAXI BACK TO THE RAMP. I RECEIVED THE CLRNC; PERFORMED A 180 DEG TURN; AND TAXIED BACK TO MY TIEDOWN SPOT. THIS SIT NEVER PRESENTED ANY REAL DANGER; BECAUSE I NEVER DID CROSS ONTO RWY 22 AND THERE WAS NO TFC OPERATING ON RWY 4/22 AT THE TIME. IT CERTAINLY COULD HAVE BEEN AN ISSUE IF I WAS ALLOWED TO CONTINUE ONTO THE RWY AND THERE WERE OPS ON THE RWY AT THE TIME. I TAKE FULL RESPONSIBILITY FOR THIS INCURSION AND UNDERSTAND THE CHAIN OF EVENTS THAT LED UP TO IT. IN HINDSIGHT; I PROBABLY DID NOT WANT TO APPEAR INEXPERIENCED TO THE CTLR AND INSTEAD ADOPTED THE APCH OF FIGURING IT OUT FOR MYSELF. INSTEAD OF HIDING MY CONFUSION FROM THE CTLR; WHICH IS NOT A RULE VIOLATION; I ACTUALLY COMMITTED A VIOLATION WHICH; UNDER DIFFERENT CIRCUMSTANCES; COULD HAVE BEEN A SAFETY ISSUE. 4 MAJOR FACTORS PLAYED A ROLE: 1) LACK OF RWY DIAGRAM; 2) COMPLEXITY OF THE INTXN; 3) I DIDN'T CAREFULLY STUDY AND DIGEST THE RED RWY SIGNS; AND 4) I DIDN'T ASK FOR ASSISTANCE IN A MOMENTOF CONFUSION. IN THE FUTURE; I WILL NOT VENTURE INTO UNCHARTED TERRITORY. ALSO; I WILL ASK FOR ASSISTANCE IN MOMENTS OF INDECISION RATHER THAN MAKING AN UNCERTAIN CHOICE. ALSO; I NOTICED THAT THE CTLRS HAD CHANGED THE CLRNC TO 'TAXI TO RWY 28; HOLD SHORT AT BRAVO' IN LATER DAYS. I WONDER IF OTHER PLTS MADE THE SAME MISTAKE I DID.