There is no one specific topic that you must write about when starting a blog. As long as you are writing about something that interests you, your blog can be about anything. You can write about your personal experiences, what you are reading, or any other topic that interests you. However, it is important to keep in mind that your blog will be moreeffective if it is focused on a specific topic.
This will help you to build an audience and generate more traffic. Additionally, if you want to make money from your blog, it is important to focus on topics that are related to monetization strategies. For example, if you are writing about fashion, you may want to focus on topics like selling products online or creating a fashion blog empire.