I don't have a website. Can I use jotform? How?

Yes, you can use JotForm even if you do not have a website. Once you create your form, you can get a URL of your form and send it to your users via email. 

Where to Find My Form URL?

You can also send a form to your user from our interface:

How to Send a Form via Email

Before you start creating your form, I would suggest you to signup and create Free account. You can use this link to signup: https://www.jotform.com/signup 

This guides can help you to create your form: 

How to create your first web form

User Guide

Hope this will help. Let us know if you need further assistance.