1. FIRST OF ALL: send a message to your teacher with
a. the address of your blog: e.g. ccantonio.wordpress.com
b. the username: e.g. ccantonio
c. the password
DO IT NOW!
2. Go back to your blog. Always start with the general url of Wordpress: http://wordpress.com. Then type your username and password. Afterwards you click on the name of your blog.