I don't know whether this channel has already been recommended but if not I'll go with MBG, it's a lesser known channel and I like it almost to the point of calling it awesome.
https://www.youtube.com/channel/UC-r774_ow9ojRSQnDv-PpyA/videos
Also if you happen to speak french, I definitely must recommend this channel which I consider awesome.
https://www.youtube.com/channel/UCRXcryyD7dzNQzd0Zkbj3ug/videos