title: How to open adb and use it to send commands
body: <p>I use ADT to try to make android apps, and use AVD. I know there is another tool called <code>adb</code>. I know it has been installed, and I want try to use it to send commands. Where is it? How to open it? Which button is used to open ADB in ADT?</p>
  
  <p>Another question is where are the API documents? How to find it except on the website, like download or whatever?</p>