Save to continue: Redirect to another form and which form to use on email

I do have additional questions about the save for later instructions. It
says to create two separate forms and use the next button. Can you use the
next button to go to another form (didn't see anything in the settings that
allow you to do so)? Also, If I am sending users an email to continue the
form, which form should be included in the email? If they've partially
completed the second form, how will the form store/save this data and
recognize them the next time they go to enter data?
Thanks,

I do have additional questions about the save for later instructions. It says to create two separate forms and use the next button. Can you use the next button to go to another form (didn't see anything in the settings that allow you to do so)?

No this isn't possible. The first form must be submitted first so it will redirect to the second form.

Here's how: http://www.jotform.com/help/38-How-to-Redirect-to-a-Page-After-Form-Submission

Also, If I am sending users an email to continue the form, which form should be included in the email? If they've partially completed the second form, how will the form store/save this data and recognize them the next time they go to enter data?

It should be the second (main) form with the session parameter (see example below). So whenever the user wants to continue the form, they can just open the email they received, click on the form URL with the session parameter and it'll automatically retrieve the partially saved data once loaded in the browser.

So basically, the first form is just used here to capture the users email which will be used as the unique session value.

e.g.

htttp://www.jotform.com/form/123123123123?session={email}

Where {email} is the email field tag from your first form. This will be replaced with the real email once the first form is submitted.

and the form URL (highlighted in orange) is the second form URL.

Hope this helps!