The fitting of the unit is pretty easy, you need someone to do the coding on VCDS/Vagcom.
Disconnect the battery
There are two spline/torque screws in the back of the steering wheel to release the airbag, remove them.
Disconnect the airbag
There is a spline holding the steering wheel in place, remove it and wheel will come off.
Remove upper and lower cowel around steering column
The existing stalk just clips in place so look on your new stalk for the clips and remove the OEM stalk.
Clip the new one in place and reverse all the above.
Vagcom is then needed to tell the car there is now a cruise option. Shouldn't take more than 30mins