Really easy, Undo the battery in the engine bay and leave for 20 mins to make sure the airbag is dicharged, Turn your steering wheel and you will see 2 lugs behind,You will need a flat head screwdriver to push the metal bits outwards, Once both are out the airbag pulls off (Be gentle as the wires will be still attached, Unplug the wires, You will see a torx bolt in the middle holding the wheel on, Undo this about halfway then pull the wheel off and undo the rest of the bolt, this stops the wires getting ripped off.
There is a guide if you search.