what i want to do for an exercise is to create a page that will paste some values to an php page (i know how to do this) and then this php page to give the previous values and some more new to another page. i dont know if i can do that. can i just take the values from the first page with post method, put them in the form tag of the second page and post them with some new to a third?
If I understand your question, you have a form with a second page and you want values to be carried to a third page. It sounds to me like you need to use sessions. The following a good tutorial going from basic sessions to eventually using sessions with cookies.