Homework shows up in the Content tab, with the rest of your course materials. You'll get notified whenever your tutor adds a new one.

Open it to see what it's asking, any files your tutor attached, and whether you've already turned something in. When you're ready, select Upload files to attach your work, add a note if you'd like, then select Submit.

Once it's graded, you'll see your tutor's feedback, and sometimes a marked-up copy of your work sent back to you.