Annotating your research can take quite a bit of time, but needs to be taken one step further in order to add a bit more clarity for the outlining process. Organize your notes by collecting all of your highlighted phrases and ideas into categories based on topic. For example, if you are writing a paper analyzing a famous work of literature, you could organize your research into a list of notes on the characters, a list of references to certain points in the plot, a list of symbols the author presents, et cetera.
Every type has a different aim. An argumentative work has to show a few sides of a particular issue and provides arguments in favor of one of them, a definition project aims to provide a clear explanation and analysis of one specific matter. Cause and effect research paper writing requires you to present a logical chain of causes and effects that relate to the selected issue, while reports simply outline a study (or studies) that were conducted previously. Interpretive papers are similar to definition ones. Compare and contrast ones, as a rule, describe the same issue from the perspectives of two different authors (scientists), while analytical research paper writing requires you to create a deep analytics of various opinions regarding the same issue.
When you outline your main ideas, putting them in a specific order is important. Place your strongest points at the beginning and end of your essay, with more mediocre points placed in the middle or near the end of your essay.
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.