If you haven’t used myblog.arts before, you will have to create an account. This is a one-off process. You should use your usual university username and password, on this page: create account.
Next time you visit myblog.arts, just log in on the right hand side of the front page of the site:myblog.arts homepage.
If your university username and password aren’t being accepted, you probably have a problem with your password. Check your account on this page: account check. If your password has expired, it will tell you, and give you instructions on how to update your password via your webmail account. Once you’ve updated your password, wait for 10-15 minutes then try to login to myblog.arts again. If you still have a problem, check whether you can log into Blackboard. If you can’t, you will need to contact the Information Services support desk, as the problem isn’t related to the blog service.