HTC DROID Incredible - Manual (Page 277)

More apps 
You need a Google Checkout account to purchase items on Android
Market. See “Creating a Google Checkout account” to set up a Google
Checkout account if you do not have one.
The subsequent screen notifies you whether the app will
require access to your personal information or access to
certain functions or settings of your phone. If you agree to the
conditions, tap OK to begin downloading and installing the app.
If you selected a paid application, after tapping OK, you’re
redirected to the Google Checkout screen to pay for the
application before it’s downloaded to your phone.
Read it carefully! Be especially cautious with applications that have
access to many functions or a significant amount of your data. Once
you tap OK on this screen, you are responsible for the results of using
this item on your phone.
After installing an app, tap on the upper-left side of the screen to
return to Android Market home. You can also press MENU, and then
tap Home.
Creating a Google Checkout account
You must have a Google Checkout account associated with your
Google Account to purchase items from Android Market.
Do one of the following:
On your computer, go to http://checkout.google.com to create a
Google Checkout account.
The first time you use your phone to buy an item from Android
Market, you’re prompted to enter your billing information to set
up a Google Checkout account.
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