The painting of fur varies wildly depending on the sculpt you\'re working with. If it\'s got good definition then you can get away with some careful drybrushing plus a wash or two. If you\'re working on a plastic figure with horrible stringy fur, then you\'re better off with a wash and a natural hilight or two.
The type of fur also makes a big difference. Brown, grey, golden fur, plus any variety of animal pelts will have various markings on the fur (leopard, tiger, etc.). I\'m sure there\'s articles out there, but I haven\'t come across many good ones. You should be able to get away with common sense, unless you\'re going after a very specific effect like snow leopard or something.