ITS CRAZY HOW THERE ARE MANY PEOPLE STUDYING FOR THE PTCB EXAM, WHICH ITS A GOOD THING....THE BEST ADVICE I CAN GIVE IS TO STUDY ALL YOU CAN ABOUT ANY SUBJECT IN PHARMACY,,IMPORTANTLY STUDY MATH AND PHARMACOLOGY...AND REALLY READ THE QUESTION CAREFULLY AND IF YOU DO NOT KNOW THE ANSWER, MAKE AN EDUCATED QUESS THAT WOULD MAKE SENSE OR THAT WOULD BE COMMON SENSE...ITS REALLY ALL ON YOU IF YOU PASS OR NOT...I STUDIED DIFFERENT  PHARMACY SUBJECTS FROM LEFT AND RIGHT AND SURFED THROUGH THE INTERNET AND FIND WHATEVER I CAN TO USE AS A TOOL TO PASS. HOPEFULLY THE INFORMATION IN MY SITE CAN BE ONE OF YOUR TOOLS AND HELP YOU PASS IN ANY SUCH WAY...GOOD LUCK EVERYONE