A C172 PLT; UNFAMILIAR WITH SAN; ENTERED CLASS B AIRSPACE WITHOUT A CLRNC.

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AT APPROX XB00; I UNINTENTIONALLY ENTERED SAN DIEGO CLASS B AIRSPACE NW OF MONTGOMERY FIELD WITHOUT A CLRNC. I DEPARTED MYF AT ABOUT XA50. THE TWR GAVE ME A 270 DEG INITIAL HDG FOR CLBOUT; THEN OWN NAV. I ACTIVATED MY VFR FLT PLAN AND FLEW TO THE COASTLINE. I HAD PLANNED TO FLY AT 2500 FT N ALONG THE COAST; THEN AS ASSIGNED FOR THE LOS ANGELES SHORELINE VFR TRANSITION THROUGH LAX. AFTER TURNING N AND ESTABLISHING A COURSE TOWARD THE OCN VOR; I CONTACTED SOCAL TO REQUEST FLT FOLLOWING. SOCAL GAVE ME A XPONDER CODE. UPON NOTIFICATION OF RADAR CONTACT; THE CTLR INFORMED ME THAT I HAD ENTERED AND FLOWN THROUGH THE MIRAMAR DEP CORRIDOR WITHOUT CLRNC! HE THEN GAVE ME A CLB TO 4500 FT. I ACKNOWLEDGED; APOLOGIZED; AND STARTED AN IMMEDIATE CLB. FORTUNATELY; THERE WAS NO DEP ACTIVITY IN THE AREA AT THE TIME. THIS WAS MY FIRST FLT INTO THE SAN DIEGO AREA AND; THOUGH I THOUGHT I HAD DONE A THOROUGH PREFLT STUDY OF THE AREA; I HAD MISSED SOME KEY POINTS. BUT; I WAS DEFINITELY UNFAMILIAR WITH THE COMPLEX AIRSPACE IN SAN DIEGO. THE SPLIT AIRSPACE FOR CLASS B WAS UNFAMILIAR TO ME; AND I SIMPLY MISSED IT ON THE MAP! I SPENT MORE TIME PLANNING MY TRANSITION THROUGH LOS ANGELES CLASS B AIRSPACE; AND INADVERTENTLY MISSED THE IMMEDIATE DEP DETAILS IN THE SAN DIEGO AREA. I GENERALLY FLY OUT OF AND AROUND UNCTLED ARPTS IN NORTHERN CALIFORNIA; AND I USUALLY GET FLT FOLLOWING IN THE AIR. I DID NOT REQUEST FLT FOLLOWING FROM THE TWR AT DEP. THAT ALONE WOULD HAVE PREVENTED THE INCURSION. THIS WAS PRIMARILY A LACK OF ADEQUATE KNOWLEDGE OF THE AIRSPACE. I DID NOT RECOGNIZE THE SPLIT AIRSPACE NOTE: 32/18 AND 100/68. I WILL NOW LOOK MORE CLOSELY FOR THESE KINDS OF DETAILS WHEN PLANNING.