There is many way for each different devices to install CWM Recovery. If you have a supported Android device, you can simply do this:
- Install ROM Manager by ClockworkMod in Google Play Store. Here is the link: https://play.google.com/store/apps/details?id=com.koushikdutta.rommanager
- After installing, open the application, and select ‘Flash ClockworkMod Recovery’. If your device is supported, it will install CWM automatically. If your device unsupported, ROM Manager will ask you “Have you install CWM manually?’. This means you have to install CWM manually.
- If you need to access CWM Recovery, you can simply open ROM Manager and select Reboot into Recovery.
Those steps you have to try first before reading the entire article.
Manual CWM Recovery Installation for 2011 Xperia Devices
There is an application in Play Store called Xperia CWM Auto-Installer you can download here: https://play.google.com/store/apps/details?id=com.pvy.CWMinstaler
You can install CWM easily using this application. This application should work with every 2011 Xperia Devices (arc, arc S, Play, Neo, mini, mini pro, etc)
Manual CWM Recovery Installation for Samsung Galaxy S II (GT-I9100)
You can see a tutorial video here: http://forum.xda-developers.com/showthread.php?t=1489235
Manual CWM Recovery Installation for Samsung Galaxy S (GT-I9000)
You can see the complete guide here: http://www.addictivetips.com/mobile/how-to-install-clockworkmod-recovery-on-samsung-galaxy-s-i9000/
Happy installing CWM Recovery!