Whenever possible, look for peer-reviewed empirical research. These are articles or books written by experts in your field of interest, whose work has been read and vouched for by other experts in the same field. These can be found in scientific journals or via an online search.
If you find one really awesome book or journal that fits your topic perfectly, try looking in the works cited/bibliography/reference list at the end of it. This should contain many more books and journals that are about your topic as well.
A single main point doesn’t have to be kept to a single paragraph, especially if you are writing a relatively long research paper. Main ideas can be spread out over as many paragraphs as you deem necessary.
Writing a research paper even though may seem challenging is a substantial part of everyday student life. You are required to write at least one research paper in a semester for the majority of the subjects. Do not underestimate research projects, as they demand a huge effort and a lot of time from you. Nevertheless, do not let your research paper assignment give you anxiety and influence your overall studies. To minimize worries and inconsistencies while working on the research paper you must be sure in your research paper topic. There are times when you are assigned to the topic but more frequently, you will have to create a topic by yourself. The whole research should be built around or from the topic. In order to choose an interesting topic, which will demonstrate your best talents, you should keep reading.