The Assignments tool allows students to submit assignments such as essays and presentations to the instructor on-line.
When you click the Assignments button on the left hand side menu under Course Content, you will get a view like the one shown below:
Here you can see the details of the Assignment. To access the Assignment simply click on its title, this will open a new window which also gives you the details of the Assignment, a place to type a Message, and the ability to Attach a File. Attaching the file is done in exactly the same way as attaching a file to a Discussion post. Ensure you have done everything the Assignment requires and click Submit.