Found the payment setup, but how do I go about putting in a price for an item?

Think he's talking about Web Form Builder. After you activate payments in your settings, simply put a number field on the form. When you go to properties you'll see an option for payments.

So pushed enough buttons and answered the first question and now created another.
Can I not put more then one item on the form?

Have as many as you like. This is one example I did for another user... http://gunsmoke.me/formtest/pricemultiplier/

When you press 'Submit' you will see the total before going all the way to paypal. If you want to make changes, simply hit the 'Back to Form' button.