After the ride all you need to do is dry and clean every thing off (Chain, cables, shifters, tape, cassette, chain rings, pretty much anything that moves) and then lube it up. Get a chain specific lube for the chain, chain rings, and the cassette. Most also work in the derailleurs in a pinch. Lubing the cables helps keep them from rusting up in the housings and forcing you to replace them. Other than that, you're bike will hold up.