I would like to know the admin url of my blog
Its a common WordPress question.
You can open following URL directly and you will be redirected to login page.
if It was not redirected by some reason, you can open login page directly
if you installed WordPress in a subdirectory such as /demo/, then you need to access WordPress login page like following
if you installed WordPress on a sub-domain such as demo.yoursite.com, then you need to access WordPress login page like following
Once you are logged in, you will be redirected to the WordPress admin of your site and which one is located in the wp-admin folder.