Any information that doesn’t fit within the framework of your outline, and doesn’t directly support your thesis statement, no matter how interesting, doesn’t belong in your research paper. Keep your focus narrow and avoid the kitchen sink approach.
Choose a comfortable place in your local library where you are away from distractions and you can focus on the work that needs to be done. Try using the card catalog and computers available to make your search easier.
If you want to find helpful and reliable sources of information, the library is literally the best place to look around. There are numerous books, published articles, journals and etc. that you can choose from about your chosen topic.
You don’t have to read in-full everything ever written about your topic. In fact, you probably can’t. Get comfortable reading through things quickly. Learn how to identify key points and arguments without getting bogged down and reading every word.
Most research papers fall into one of three categories: analytical, expository, or argumentative. If you’re presenting an analysis of information, then your paper is analytical. If you’re writing to explain information, then your paper is expository. If you’re arguing a conclusion, then it’s argumentative or persuasive. Your thesis statement should match the type of paper you’re writing.