When choosing a topic to research, there are a few key aspects to keep in mind:
Interest
Broad vs. Narrow
The "W" Questions
When getting started with your research, it is a good idea to get a general overview of a topic or gather background information. This information can help you decide if the topic is of interest to you, and whether you want to continue researching in that subject area. Some best bets for background information include encyclopedias, handbooks, current events, etc.