first off, get a service manual (helms) [look in the online resources post in the sticky] to see how to disconnect the SRS. you dont want that thing going off on you.
everything else is self explanatory. install the hub where the steering wheel use to be. attach the steering wheel to the hub with the included hardware.
the horn will not work. you will need a shoehorn contact piece from the 88-91 crx/civic. i believe there is a write up that can be found in our diy forum or this civic forum.