How can I send a copy of the form to the person submitting once it is finished?

You can do that by creating an Autoresponder email. Here's a guide:

1. Create a E-mail Field and then click the Emails button in the Form Builder.

2. Select the Autoresponder and then click the Edit button.

3. In the next screen, you can fully customize the Autoresponder email. You can edit the message, the recipients, sender name, sender email and many more.

Please check this complete user guide: Creating-a-Form-Autoresponder

Hope that helps. Let us know if you need any further assistance. Thank you.