The strongest researchers spend their energy at the beginning of the research process reading around the topic.
Research topics can often feel daunting if you do not start with a strong foundation of understanding. So take time at the beginning of your research to access sources that are well oraganized with basic background information about your topic - such as an encyclopedia database.
Start with encyclopedia style databases to get a basic understanding of your research topic.
The following websites may be good places to get ideas for strong leaders to research.
The following websites may be good places to get ideas for leadership qualities to research.
American Presidents by 
