This chapter provides a comprehensive guide to preparing effective research reports, including theses, dissertations, and journal articles. It covers the purpose, structure, and key components necessary for clearly communicating findings. The chapter begins with fundamental principles of writing style and language, which are essential for creating effective research reports. These principles apply to every section of a research report, including the introduction, methodology, results, and conclusion. Key topics include document formatting, major sections, and subsections, all aimed at enhancing readability and impact. The chapter also discusses different types of abstracts, emphasizing the characteristics of a well-crafted informative abstract. Additionally, it provides guidance on constructing effective section such as literature reviews, methods, results, and statistical reporting, along with effective discussions and conclusions. Finally, the chapter highlights the importance of proper citation and referencing in research reports. By the end, you will be able to prepare, structure, and present research documents that effectively communicate findings and adhere to academic standards.