You will get 250 caps for joining which can be redeemed for $2.50 in gift cards. There are $1 Amazon gift cards you can get for 105 caps.
After you join, make sure confirm your account via email. This will give you the bonus. After that click here and you can choose between a free $1 bill or a free $1 Amazon gift card. You will be asked to provide your address. You will also receive another email to confirm that.
It sounds like a lot, but with the steps to follow it’s very easy. You will have more caps left over to get an additional freebie too.