Turnitin is an application that checks documents for unoriginal content. After your work is submitted, tutors use the system for commenting on work and awarding marks.
If your tutor uses Turnitin you will be invited to submit your work through Moodle which will automatically send it to Turnitin for checking.
The Assignment tool on Moodle allows you to submit your work.
You will see this icon next to any assignment due for submission:
Download the help guide for step-by-step instructions: