and twitter rss

Hello i am wondering how i would go about creating a sign up page that when you enter the information and click submit it will upload the data to a database and then you can use the username and password to login to another page on the app

most of them are not giving me pacific answers, its hard to explain but i want to make people sign up with there information than they are able to login with the password and user name that they created.

how do i create a log in page with my own database that i have already created I have put a sign up page and a login page i makes you sign up and saves your information than you can sign in.

i need to know how to put a video into an app and how to make it work