To download the it just go to the Market program on your Android phone and do a search for maps. It appears at the top of the list.
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It's easy to download and install items from Android Market* to your device; just follow these steps:
1.Navigate to an item you want to install and select it. The item details screen appears. Read more about the item and its developer on this screen.
2.If you want to install the item, select either the Install or Buy now button.
◦If you select Install, then the item will start downloading immediately.
◦If you select Buy now , you may be asked to sign in to an additional Google account. Sign in and select Purchase now if you want to proceed. Step through the purchase screens.