Look into a few dance genres from the 90's/early millennium. Jungle, IDM, DarkStep, Nuero, liquid. Those are all DNB genre off shoots and forerunners so you'll notice some similarities to the example you offered up. In regards to that dark heavy DNB vibe you'll want to look into artists like Spor, Evol Intent, Dieselboy, Noisia... if you want more experimental dnb sounds then hit up The Flashbulb, Aphex Twin, or Squarepusher. Dunno, just a few ideas. These are by no means guaranteed to be what your looking for but with any luck you'll find some inspiration.
As for writing better drum rhythms, do it all by ear. It's how I started around 10 years ago. You can take lessons or have someone explain it all to you but I think you'll have more fun just fucking around with the tech. You can also try learning drum sheet music and just start ripping rhythms from places you enjoy. No one will ever get mad at you for "stealing a drum rhythm" and if they do, tell them that Quarl said to go suck a fat dick chode.
If you're just starting and you want to hit that hard DNB sound it will take a few years to hone your skills and knowledge but you should feel free to hit me up if you ever want my advice.