Don't just research and regurgitate, ask questions and compile your own theories! Research is more interesting if you have an open mind and never take anything at face value. All authors have a bias, figure out for yourself what is fact and what may not be. Was a primary source used (letters, writings, personal accounts), or a secondary source (referring to a book that referred to a primary source), or what? Check it out for yourself. Following are some questions to get you started.

1. What was Newton's upbringing really like? The stories all differ so much... Check out Michael White's book under Bibliographies (well, at least read the intro). What other reasons could there be for such differences in a man's life story?
2. Was the story of the falling apple true? Which version do you believe? Did Newton really tell the story himself?
3. Did Newton really create calculus and then NOT use it in his Principia in favor of geometry? Is it really plausible that he created calculus? What proof is there for either argument?
4. Check out this book: Sootin, Harry. Isaac Newton. New York: Julian Messner Inc, 1955.
   Why is it an unreliable source? Do you find it amusing? I do. Remember NOT to use this source for any reason!
   
5. Look into the relationship between Halley and Newton. How did they affect each other's careers? What are some things that would not have happened if they were not friends?