Creating a second WordPress blog is easy. The first step is to create a new blog site on WordPress.com.
Once you have created your new blog, you will need to copy the content from your old blog into the new one. You will also need to update the name and description for the blog, and add a category to help you organize your posts.
Once you have completed these steps, you will have created a duplicate of your old blog without any lost data. To keep your new blog separate from your old one, you can choose to set up a separate domain name for your new blog or use the same domain name as your old blog.
If you use the same domain name, all of the posts on your old blog will be imported into your new one.