The Droid 2 offers you not just one, not just two, but three different ways to download and install apps:
Market. Here’s the primary way that most people download and find apps. It’s right on your Home screen. Tap the Market button and it launches. From here you can search for apps, find information about apps, and pay for them.
The Web. You can download and install apps from websites. Visit the site on your Droid 2 browser, and download from there.
Using a bar code scanner. Of all the amazing tricks the Droid 2 can do, this one may just be the coolest. A free app gives the Droid 2 the ability to scan bar codes and QR codes. (QR codes are a special kind of bar code used by smartphones, cameras, and other devices.) After you’ve installed this app, you can use your Droid 2 to scan a QR code to download other apps. When you’re browsing the Web with your PC or Mac, and you come across a bar code for downloading, just point your Droid 2 at it, click a button, and the magic begins. The phone grabs and installs the software from the website. For more on bar code scanning, see Downloading and Using a Bar Code Scanner.