Server error registering at about 9:00AM BST.
When re-submitting registration got:
Please correct errors below: This username is already taken. Please choose another. This email is already registered in our database. Please choose another.
Help get this topic noticed by sharing it on Twitter, Facebook, or email.
I'm sorry for the difficulty signing in. That sounds like you've already created an account. The "username is already taken" error is pretty common and would just mean that you would need to try another username, but since you got the email error, I would guess an account has been created.
You should be able to log in to that account by recovering your password:
If this doesn't work, let us know.
O'Reilly Media, Inc.