How can I change email adddress that forms go to.

I am not sure if I have understood your question correctly.
Do you want to change the Recipient of your form?

Here is a guide on how to setup email notifications: Setting-up-Email-Notifications

Also, here is a guide on how to setup autoresponders:Setting-up-an-Autoresponder-Email

Autoresponders, are the users who fills up your form and types in their email address.