Right,

Few things before I even begin with anything, if this is your first project, and you don't even no html and css, I am afraid but you may aswell give up now, I would hire a professional because the stuff you intend to create is tought even for the professionals!

Another point, HTML and CSS, will be needed in this project, but the main language would be PHP so my suggestion would be to post this in the PHP Section!

This stuff is quite complex, and very mind boggling, so I would cut it down as much as possible into stages and then work your way up.
For example:

Just ask for help on simple form, where they can add there details and upload images, start with that, once you have that as a basis, then you can work towards the rest.
But with me being still a beginner in the whole PHP Language, my advice would be, post this in the PHP Forum

Hope some of this helps
Cracka

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