Best is loads of distortion (maxed up) until there's some fizz. I find the Line 6 Uber Metal very good for black metal, you might want to try it out. I personally just use loads of distortion for black metal.
Guitars: high output humbuckers
Amplifier: Capable of insane levels of distortion
There's the basics. Generally black metal guitarists do not often use effects, what you hear is just distortion, though there're exceptions here and there.