General tip:
Computermusic is a great magazine (as you get some terrific vst/vsti’s for free with each issue) with very interesting articles. Also their site is full with this kind of tutorials. Although the focus is more on tradional sequencer & softstudio’s.
Remember that if you’re working in a tracker environment, your samples will generally be straight hits (e.g. kick and snare) to begin with, so the music will in fact usually sound too punchy without compression. From my experience, applying compression to tracked music is usually more a matter of smoothing the levels out to create the opposite of ‘punchy’, but as Timo already said, it really depends on the music.
I just think a lot of online articles are aimed at analogue recordings of drums, bass guitars or vocal tracks, where the fact that a human played or sung the recording gives off a greater amount of dynamics. But, excluding the use of VSTis, a recorded kick sample, for example, in a tracked tune will already be at maximum volume, and so using the compressor to generate peaks to give a ‘punchy’ sound isn’t always going to give you the results you want.
Will look into those links