Can I download the responses to my own computer? If so what format are they in?

Hello;

You can download the responses -which we usually call form submissions- on to your computer in excel and csv format. Also you can download every form submission as a pdf with a default layout we provide or use our Pdf Editor to make your own pdf designs and make them populated with your form submissions data. You can even setup automated emails which will send the form submissions into your email as pdf, in a layout your prefer. 

We also have many 3rd party service integrations such as Google Drive, Dropbox etc. which you can authenticate your account and your submissions will be uploaded there automatically when your forms are submitted. 

That's great. Thanks for such a thorough answer.