How to install Selenium IDE?

Pre Requisites:
  Mozilla Firefox

Installation:

  Go to http://seleniumhq.org/download/.
  Click on the download link for Selenium IDE. You may get a message saying Firefox prevented
this site (seleniumhq.org) from asking you to install software on your computer.
  Please click on the Allow button.
  A pop up will appear.
  Install button will become active and then click on it.
  This will now install the Selenium IDE as a Firefox add-on.
  Once the installation process is complete, it will ask you to restart Firefox.
  Click on the Restart button. Firefox will close and then reopen.
  Once the installation is complete, the Add-ons window will show the Selenium IDE and its
current version.
Start Selenium IDE:
1.  Open a new Firefox browser
2.  Click on tools
3.  Click on Selenium IDE