The DSP Project is a site with video tutorials by Rupert Brown. A lot of Ableton Live, but also some hardware reviews and interviews.
The Dj Podcast is a site with texts and video tutorials by Peter Morgan. His target audience is mainly digital DJs, so a lot of the material is about Ableton Live, Traktor etc. That said, a lot can still be learned, even if DJing isn’t something that you are planning to do in the near future. The site’s motto is ”DJ Video Tutorials to Improve Your Mixes”.