ok first of all check out this web site (below) its a PDF document of the dash kit youll need to put the radio in properly it shows you how to take the car apart and put it back together again with the new radio in it
Second make sure you have the right harness that will plug in to your car this makes like easy all you do is match up color for color with the actual radio harness check and see if your car has a factory amplifier in it if it does the harness may be different
other than that its pretty straight forward form there be carefull not to blow any fuses