edit pdf

Hi experts,

i have a mission:

to open pdf file and the user could fill his: name, age, religion, no' of children etc.

1. if he write 2 children they want to open a table with 2 rows and he should fill his children details(in this tables).

2. the user can choose with radio buttons his status: marry, single etc.

if he married it suppose to open another section and there he should fill his wife detail's.

and than save this as pdf file.

is anyone can guide me how to start.

this is my first time that i do something with pdf.

i think it call: offline interactive form

thank you

dana.