I changed www.mysite.com/?p=51
Now all my new posts go to www.mysite.com/my-first-post and I don't know how to change the URL.
When I go to posts => edit, the only two options are "view post" and "get shortlink" instead of the option of changing the URL like it was when I first made the change.
Under the where you enter the title it says:
permalink www.mysite.com/my-first-post "view post" "get shortlink"
So how do I change the URL to something else like www.mysite.com/my-second-post?