my physical assessment class for my bsn program had a textbook similar to what the medical students had, we were told. we learned to do a complete physical exam on someone. our final exam was to perform a physical exam on another person in the presence of the instructor and then turn in a written report within a week. the idea of this class is to learn what is normal and abnormal. it is the abnormal stuff that you need to recognize to help identify nursing problems. assessment is step #1 and the foundation of the nursing process. if you miss things in assessing a patient the whole foundation of your thinking process, like the leaning tower of pisa, may seem sound, but the end product just looks like something isn't right.
there is a sticky thread in the nursing student assistance forum that you will find very helpful, especially some of the websites from the medical schools:
p.s. i didn't want to scare you. health assessment class should be to learn the basic normal assessment of a person. some classes also throw in some of the pathological things that you can find. it depends on what your program has decided the curriculum to be. what i have found is that learning assessment has been a career long thing. i'm always learning something new, particularly when it involves assessing something specific to a medical disease. i still have the notebook from my assessment class from 20 years ago! but as you will find, when it comes to specific medical conditions, there are specific signs and symptoms that you will want to assess for.