The Android SDK install location installs the SDK manager only for the user running the installer. This isn't a huge deal, since most people are going to develop on the user where the SDK was installed, but this can be a confusing place to put the SDK, especially since I'm pretty sure everything else is installing to locations that all users can use.
This is probably a good prerequisite step to adding adb to PATH.
The Android SDK install location installs the SDK manager only for the user running the installer. This isn't a huge deal, since most people are going to develop on the user where the SDK was installed, but this can be a confusing place to put the SDK, especially since I'm pretty sure everything else is installing to locations that all users can use. This is probably a good prerequisite step to adding adb to PATH.