how to use the Amazon Appstore for Android without a credit card?

it says i have to have a payment option
but i don’t have a credit card! (im 15, and my parents don’t ether)

i’m not going to get any paid ones only the free ones…
(there giving away paid ones for free everyday)

it used to work for things like the Android Kindle books or MP3′s without a credit card.

Like if u have to photos can u copy and pace there face or something like rht

I am thinking of returning my ipad to get an android tablet. Just wondering what the difference is between the android market and appstore. Are there many free apps on the android market. Do i need to give my credit card info to sign up for the android market?

Also— the android market makes apps for many different tablets so will apps fit the screen perfectly?

I went on the web on my Android phone to download the Amazon Appstore and I got the link sent to me via text message and clicked it to download it. In the notification bar it said it had downloaded it, so I opened it from the notifications and it said “For security, your phone is set to block installation of applications not obtained from Android Market.” It gives me the options Settings and Cancel. When I click on settings, the only options I have are “Manage applications”, “Running services” and “Development”. What do I do? Please help.

So I got my phone last week the mytouch 4G for tmobile I have unlimited text and call, plus 2gb internet for $ 20. So far I got a notification that I used 1.5 out of 2gb for internet. So I started using my wifi on my cisco valet and unchecked mobile internet in settings now will tmobile charge me if I use wifi for internet or the android appstore?