"semi-Advanced" form techniques not working, need guidance(img/details included)

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Hey everyone, i'm trying to create a form which allows a user to state which projects he is workin on in an association, and what his position is in the selected project. Then i want his selections to be recorded into MySQL for later retrieval.

Here is my form CURRENTLY

[url=http://codes.concordia.ca/codes/assets/img/temp/problem/1.png]http://codes.concordia.ca/codes/assets/img/temp/problem/1.png[/url]
I have the first page working, no problems.

[url=http://codes.concordia.ca/codes/assets/img/temp/problem/2.png]
http://codes.concordia.ca/codes/assets/img/temp/problem/2.png[/url]
Second page as you can see has recorded the first page data fine.

[url=http://codes.concordia.ca/codes/assets/img/temp/problem/3.png]http://codes.concordia.ca/codes/assets/img/temp/problem/3.png[/url]
Just an example of the user selecting multiple projects. I have no experience with javascript so do not know how to control it well. My duplicated project fields spawn below the submit button no matter what i do. they are currently spawned by by pressing the text "add extra project"

[url=http://codes.concordia.ca/codes/assets/img/temp/problem/4.png]http://codes.concordia.ca/codes/assets/img/temp/problem/4.png[/url]
As we move on to the third page i've tried to put the project/position selection into arrays. i failed. they do not print out and i am quite stumped as to how to work it. I am only a beginner and complicated form-related arrays that must be put into MySQL still cause me difficulty.

[url=http://codes.concordia.ca/codes/assets/img/temp/problem/5.png]http://codes.concordia.ca/codes/assets/img/temp/problem/5.png[/url]
The fourth page works fine, expcet for the second page data, again

All of this takes place on one single page. Here is the code, i know it's a bit much so i will answer questions as best i can.

The code was too much for this forum to upload so i've put it here [url=http://codes.concordia.ca/codes/assets/img/temp/problem/6.png]http://codes.concordia.ca/codes/assets/img/temp/problem/6.png[/url] instead.

Thank you all for your help, i know that somehow i must use PHP arrays, and javascript, but i just can't seem to crack this. And i've found NO tutorials or issues exact enough to solve my problem.

Thank you!