When setting up PayPal do we need to add any other details besides our email?

5. All I put is my email for the paypal. That didn't seem like it was enough information to integrate the payment over to paypal. Was there nothing else needed?

With PayPal Standard (or just PayPal) the email is the only thing that you need to add.

The only note here would be that the email should be the one where you want to payments to be sent to (not the emails). Once that is done, you will need to add product/subscription or setup donation, but in regards to the main setup, email is the only thing you need.

You can see more about the same here: Setting Up Your First Order Form