I rooted my Droid 3 with this method. Easy and works well.
You asked for a critique of the video and here it is.
I found all the 'jittering' distracting. It would be much better if you used a tripod instead of the recorder being handheld.
what does it mean to open terminal or command prompt on my phone to type the commands to root my LG Rev
i have done this Connect your phone to the PC and make sure you select Internet Conenction as the USB connection mode. Make sure USB debugging is checked in Menu > Applications >Development. where I type the commands????