Should be? Really? Says who? Take your entitlement straight to the door. People here are doing things for free and sharing their knowledge... and you are demanding to be spoon-fed it.
Do you know what the SDK is? If not, maybe you should read up on what it is and why you would need it.
No, you do not need the SDK installed. You do need the drivers for your device installed though, both for fastboot and normal mode.
Hours? When I got my first smartphone many years ago, I spend months lurking around this site trying to take in as much knowledge as I could before even attempting to flash anything. I wanted to make sure that I understood everything I was doing before doing it -- I did not want to blindly follow someone's step by step.
You're lucky you even got a video.
http://forum.xda-developers.com/showpost.php?p=2031989&postcount=45