There are a few things that are generally required in order to publish a blog. You will need to have a website that is up and running, and you will also need to have a domain name and hosting account. Once you have those things set up, you will need to create an account with Blogger or WordPress.com, and then you will need to create a blog using those platforms.
Once your blog is set up, you will need to add content to it. You will need to write articles, post photos, and make videos. You will also need to add links to other websites and articles on your blog. Finally, you will need to promote your blog through social media and other means.
The most important thing that is required in order to publish a blog is motivation. If you are not interested in writing articles, posting photos, or making videos, then it is likely that your blog will not be successful.