By PDF form, do you mean .pdf or some thing? are you creating them using HTML?
For example: If someone chooses an item from a list on the first page. I want their selection to show up in a field on the following pages so they don't have to keep reselecting.
when you will go to second form, values of fields of first form will be submitted at server, then you can fill these values in the appropriate fields in second form.
Unsolved 
