You should have receive an email from TURNITIN saying you are registered.
Here are some steps for Returning Students:
1. For those students who have used TURNITIN, you can just click on Log In Now button.
2. A blue box will appear Login to Turnitin
3. Enter your Email address: your UCQ email and your Password. If you forgot your password, go to Trouble Logging In
4. Click Login button