Product review (5 stars): Beginner - Very Easy Install
I have never installed a kegerator or any pressurized system and found this install very easy.  The install only took a single day of work and the only tools you'll need other than what is provided is a drill and bit to make the hole in the fridge, a wrench for attaching the regulator to the CO2 tank and I used some Great Stuff to provide insulation around the tap where I drilled the whole.

The only problem I had was a leak between the CO2 tank and the regulator.  Unfortunately, I did not notice until after my first tank had leaked away all the CO2 so I would recommend checking the lines after you install your first keg.  Best way is to spray some soapy water on the connection points and you'll be able to see any leaks.