Install from your WordPress dashboard.
1. Navigate to your WordPress dashboard
2. Click on Plugins -> Add New
3. In top left corner besides Add Plugin find button labeled "Upload Plugin", click it
4. Upload .zip package, click "Install Now"
5. After a couple of seconds a new page will appear, click Activate
6. Plugin is now active.
Tracking number can be added to an order in WooCommerce -> Orders -> click on a given order.
Find shipping tracker box under Order Actions.
Fill the shipping info out, and if you send the order email, it will be added to the email.