As you start reading about topic you should start thinking of questions you want to answer with your research.
Your questions should include the "Who, What, Where, When, How and Whys" of a topic. At the start of research they should ask very general question about your topic such: The first set of databaes should provide answer to basic questions on your topic (such as bullying) such as
What is _________?
Where does it take place?
Who is affected by _____________?
As you read more about your topic you question should get more specific your question should get more specific
What are the causes of ________________?
What are the effects of ________________?
What are the “pro” arguments about_______________?
What are the “con” arguments about ______________?
What should be done about ______________?
These questions will help guide you as you complete your research and form the content of your speech.