After you are signed in, click on the title of any existing blog post and in the top right corner you will see "+Add Blog Post. Click on that to post a new blog post. Then, if your post isn't spam, it will be approved by a moderator in a few hours.
After you are signed in, click on the title of any existing blog post and in the top right corner you will see "+Add Blog Post. Click on that to post a new blog post. Then, if your post isn't spam, it will be approved by a moderator in a few hours.