Here's a general run through of some of the top sources for all things dubstep:
1.GetDarker: With compilation releases that bring you up to speed with some of the sickest tunes out as well as hosting regular events, GetDarker is a great source for all things dubstep.
2. Youtube famous Inspector Dubplate always brings some heavy artillery, with mixes such as ‘Friday Filth’ sessions going since 2008, inspector dubplate will show you everything heavy in dubstep.
3. For the more mainstream/brostep vibes, look no further then UKF. Hosting huge parties at some of the biggest clubs around the country and brining you some of the biggest names, UKF is one of the sources that has made dubstep as big as it is today.
4. News, reviews and previews, MyDubstep is a great way to keep up to date with the genre on a more in depth level and also spot some upcoming shows by going through their events listings.
5. Preview some of the latest and underground tracks in full on Dubstep.net. Granted you do have to troll through some really waste tracks, for the most part this is a great source for more of the under the radar material that UKF may miss.