I want to learn php ? But don't know anything ! Help?

Hey guys i am a web designer well right now i am a rookie, but last time i have an order in which i have to make a page in which a contact form with auto response have to be created and i am using PHP.and my hosting service provider provide me php admin and i don't know how to use. I want to use following. like email, attachment , and with require * . Please provide me a source. or if you have any link that will teach me php from starting. right away. But that creating form and attaching it in html file. I use dreamweaver.