Early E36 BMW spark plug replacement on a 1995 BMW 318I.  
Removal & Installation is somewhat universal on the E36's, however the post-95 models put 10 mm bolts and clips on the spark plug coil packs.
During the video I find one of the spark plugs is coated in oil, this is fairly common on BMW E36's with a lot of miles, typically means that the valve cover gasket needs to be replaced.