Renewing books online is easy, but you have to do it BEFORE the book is overdue. 

1. BEFORE the book is overdue, open "My MELcat"
2. Enter your name (firstname lastname) and the barcode from your Pierce Law ID card.  Click SUBMIT.
3. Find the link to items checked out.
4. Click on the appropriate button to renew the material.
5. Logout when done.