Some bloggers like to write their posts in a Word document. Your MS Word document does not have to consist of plain text only. There are many nice ways to make it organized and easier for a reader to read. Usually in the literature you will encounter roman numerals for the main topic, capital letters for the subtopic, numbers for the details and lower case letters for the sub-details. Word documents have a feature that will allow you to automate the process of inserting numerals and letters so that you will not have to worry about doing it yourself.
In order to do that from the top menu bar select Format, then choose Bullets and Numbering. Next, from the Numbered tab choose the basic numerals and letters. For more advanced numerals and letters go to Outline Numbered tab. This option is usually more practical as it will enable you to successfully organize your dissertation. I found those to be more useful than the numerals and letters from the Outline Numbered tab.