Chicago formatting is used mainly for historical research papers and uses footnotes at the bottom of each page rather than in-text citations and works cited or references page.
The thesis statement is a 1-2 sentence statement at the beginning of your paper that states the main goal or argument of your paper. Although you can alter the wording of your thesis statement for the final draft later, coming up with the main goal of your essay must be done in the beginning. All of your body paragraphs and information will revolve around your thesis, so make sure that you are clear on what your thesis is.
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.
To draw a parallel, a lawyer researches and reads about many cases and uses them to support their own case. A scientist reads many case studies to support an idea about a scientific principle. In the same way, a history student writing about the Vietnam War might read newspaper articles and books and interview veterans to develop and/or confirm a viewpoint and support it with evidence.