Simple Website Login / Admin Project

Hello I would like to create a login setup for my website. This will be added to the website, I am not asking for a full website to be built, just the functions. It will have the following functions: 1. Customer will be able to register, and in future login, using their facebook / twitter or a seperate user name and password, the registration will also ask for their month of birth. If they use a facebook or twitter log in their profile picture will appear next to their name on the website pages in the header. 2. These details will be stored to a central database. 3. If the customer wants to unsubscribe theyre will be a link and a simple form to fill in, once they complete the for their details will be deleted from the database. 4. There will be a facility for an automated email to be sent to the email address entered on the registration. This email needs to be a fully editable php formate.