I have no idea what jotform is and why should I sign up

Jotform is an online form builder. You can create forms with us without the need to code it yourself. You can create forms such as registration, invitation, signup, and more. Please read our FAQ page to know more about us: https://www.jotform.com/faq/. 

We suggest you to signup if you need a form for your personal or business use :)