The most important advice I can give you is DON'T EVER LET YOUR UNDERGRAD GPA GO BELLOW 3.5..... Some of us (like me) were fools who screwed around in our undergrad and now are suffering a low undergrad GPA...
As far as studying strategies goes, its all about how serious you take your schooling... if you take your schooling seriously, you'll do well.... If you go around making too many friends, hanging out most of your day, or playing counter strike when you get to your room, then no matter what strategies we tell you, it woun't do you any good.
The most recent classes I am now taking (post-bacc), for example genchemI.... I used to read the entire chapter before the professor got to it (when I say read the entire chapter, I mean read it, underestand it, DON'T TURN THE PAGE until you fully underestand everything, and solve every problem the chapter gives, and Im not talking about the end-of chapter problems, you do those when the professor is done teaching you the chapter)..... Do this for every science class you take and you should be in really good shape.
As far as english and history goes, I really don't know what to tell you, english isn't my 1st language so I had a hard time with english and I really hated history case it bored me....
As far as calculus goes, I have a minors degree in math so math is kinda my favorit subject (well... it is until I had to take numerical analysis, which SUCKED @$$)..... Calculus is fun but don't let it fool you, it starts off slow and easy and makes you feel over confident..... Stay on track and DO EVERY SINGLE problem the professor gives in every chapter, calc (much like any other math class) the more problems you solve, the better you get it (and when I say better, I mean ALOT better)
Biology 1 ~ this, in my opinion, is mostly dependent on the kind of professor you get.... MOST biology professors I have had / heard of are major jerks and make the class pretty hard.... Dunno how your college is, but if you have an anal professor, its probebly going to be your hardest class in your schedule.... The only advice I can give you is follow the same strategy I told you about for chemistry along with re-writting all the class notes RIGHT after every class..... On the weekends, crack open your re-written notes and go over them.... Spend anywhere from 1 to 2 hrs a day for this subject.
Your taking a nice 15-16 credit hours, stay focused, its going to be alot of material but it isn't going to be hard.
