Again, the methodology of your work should be in strong accordance with the initial thesis and the main aim of your research. Visit the university library - the librarians might be eager to provide you with a good textbook as well as with a recommendation on how to start a cover letter . Thus, a lot of books can teach you research philosophy, so that you will be able to choose methods on your own. Moreover, it is convenient to look for someone else's thesis methodology example in the library. Remember, only deep theoretical knowledge can help you to reinforce your dissertation with firm methodological underpinnings.
Writing a research proposal may be a requirement of your faculty, but it can be a valuable personal process too. It will help you to structure your thoughts and your proposed project. It will allow you to focus on the research question and its purpose, what is involved in the project, as well as providing you with a clear plan of how each stage of the research will be undertaken, and the anticipated outcomes. This initial piece of writing will also help you to identify problems that you may encounter along the way, and direct you to think about how you will manage those kinds of issues.