I don't claim to be an expert, but these are some general tips that have helped me.
if your eq doesn't have a spectrum analyzer, get one that does.
demo this:
http://www.dmgaudio.com/products_equality.php
seriously. 60 days absolutely free, with no restrictions. changed my life (kinda).
some general eqing tips:
1. Use your spectrum analyzer to see the dominant frequencies of the sound (the peaks)
2. Use auto listen (a feature on equality) with a boosted bell curve shape eq (not sure what its called), and run it through the frequencies, and use your ears to see the regions of the frequency range that are important.
3. cut low end when you don't absolutely absolutely need it (usually only absolutely need it in kick or bass), because even though you might not notice it, its eating up headroom in the bass end, and thus making your bass quieter.
4. keep using auto listen and the spectrum analyzer to find out the important frequencies, and cut the rest. An important part of this is determining a role or a frequency range for each sound, so that you don't have sounds that are all up in each others business, overlapping and such. When this happens its called frequency masking; it makes each sound sound quieter, and is not good.This principle is applicable to all sounds, but its really important in drums. So for drums, you want to divide your drums by frequency range (roughly). There are no hard and fast rules for this, so you're going to have to use your ears. A rough process would be as follows:
1. solo kick. The essential parts of the kick are roughly from 60-120hz. Cut everything above 120 and everything below 60.
2. solo snare. The essential parts of the snare are roughly around 230-250 hz (the crack/punch) and around 500 hz (the "air") Cut everything below 230 and use the Q control on one of the bands on the eq to boost roughly around 230-250 (you don't necessarily need to boost a lot, rely on your ears) Boost around 500 hz, and then experiment cutting above 500, or between 250 and 500; the object is to remove as many unnecessary frequencies as possible, because they are eating your headroom and making your track quiet.
3. repeat for all your higher percussion/hats etc. If the important parts of two sounds are trying to fulfill the same "role" (are in the same frequency range), see if you can eliminate one of them. Again, there is no hard and fast rule; remember to use your ears.
In my experience, when I started using eq to emphasize only the important parts of my drums, it made them like 100000000000000x punchier and more awesome, and I hope that the same will happen to you. Again, I don't claim to be an expert in these matters and this is all IMHO.
Also, +1 on the dnbscene eq article, really good shit. And also layering. So so so so so important. Check out the Q and A with objekt (I think its around here somewhere), someone asks him how he layers and its pretty cool. He like cuts and pastes different parts of different drum samples and mashes em all up, check it out.
hope this helped!
Luigi