paypal for users

I'm hoping to let my users collect money just using their paypal e-mail address.

Let me know if you know a tutorial for this.

Thanks

You can put a simple paypal button on your website, or do a Paypal API

What I want is for them when signing up, to be able to just put in their e-mail and collect money from their profile, I don't want to make them go grab a button or anything, just as simple as their e-mail in, I know it can be done because it is done in a lot of e-commerce websites. So I was looking for a tutorial on this, but could not find one.

I found 1, but hoping for better ones

http://freelanceswitch.com/money/making-a-paypal-form-tutorial/

Peace