Hi I just bought an iPad 2 but can't download any free apps can you tell me my

You are required to provide credit card details to download apps be it free or paid.

Nothing will be deducted from your credit card if the app is free.

There will be a authorizing hold of US$1.00 to verify your account information. It will be credited back to your account later.

When you try to install an app, after you press free, then install what happens? Anything?