Okay so, I am going to be self studying for the PTCB and the books that I am going to get are 1). Mosby's Review 2). The pharmacy technician and the workbook to go with it. Should I get anything else? I heard the test is math heavy at times? So what good books are there for the math part? Is all what I have in mind so far enough? Is the math hard btw? Are there any workbooks you guys recommend me to get for the math questions?