1) I am not sure what you mean by this, but no you do not need to study anatomy to lift weights, unless you are doing an exercise science of some sort in school, just know proper form on them.
2) unless you're doing fullbody circuit training, and not repeating the circuit, 9 exercises in ah hour is a too high. short and sweet is the key.
3) I don't think there is a 'set in stone' rule of how many exercises per bodypart you should do, but generally having more pulling exercises than pushing exercises will not hurt in the long run. take a look at the stickies for more insight on this question, CowPimp has something in there that will give you what you want for this.
4) I don't know.