Drum'n'bass is one of the easier ones, I reckon.
Faster than 160bpm, beats are based around anything except the 4-to-the-floor doof doof doof doof that is commonplace in house, techno and trance. Often uses sampled breakbeats, traditionally with a lot of syncopation and variations, although after the arrival of tech-step in 1998 the really detailed, edited stuff has become much less popular. I think probably anyone who has got into drum n bass since about 2000 thinks of it as having big punchy beats and angry, distorted basslines.
I never quite got into drum n bass. There are some tracks I like from producers like Digital, Omni Trio, Photek, and Klute, and some jungle stuff like Congo Natty, but I was never rrrrrreally into it.