Q: how do i get free apps without putting in itunes card, or credit card

Is it a new account ? If it is then unless you use the instructions on this page when creating a new account : http://support.apple.com/kb/HT2534

then credit card details will need to be entered before the account can be used to download any item from the store - you should be able to remove your card's details after entering them.

If you don't have a credit card then you will need to create a new account, and this time use the instructions on that HT2534 page when creating it. If you want to use the same email address then you will need to replace it on that account first e.g. by tapping on it in Settings > iTunes & App Store on your phone and logging into it, via the Store > View Account menu option on your computer's iTunes, or via http://appleid.apple.com

Creating an account with 'none' as the payment method :

computer's iTunes : https://discussions.apple.com/message/24321860

iPhone :https://discussions.apple.com/message/24700173