Microsoft Word is a popular word processing program that can be used to create documents, brochures, resumes, and simple web pages. It has tools for formatting text with fonts, images, tables, and other elements. Documents in Word are typically saved with the .docx file extension. The Word interface includes tabs for formatting options, a toolbar for common commands, and areas for document text, rulers, and more. Text can be selected, copied, moved, and deleted using keyboard shortcuts, mouse clicks, or menu options in Word. Documents can be opened, saved, printed, and closed as needed.