You'll have to remove the steering wheel and horn contact ring to get to the switch. You may find a spring and plate in there to help hold the pieces in place inside. If so, you will have to remove that as well.
Other than that, you will find 3 phillips screws holding the switch tot he column, and a phillips screw holding the turn signal lever to the switch. Look close and plan how to get the plug out of the column before you start yanking on things... It or the new part will have to go back in as well as out.
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.