With their web magazine, The Hub, MacProVideo/Ask Audio consistently post interesting tutorials for Ableton Live. A couple recent articles look at some essential shortcuts for more efficient workflow in Live 9, and making a custom template for working with Live and Liine's Lemur control app.
Essential Ableton Live 9 shortcuts
Creating a Liine Lemur template for Ableton Live
Last but not least, Ableton's Jesse Terry, project manager and one of the designers behind Push, recently spoke to MacProVideo's Rounik Sethi - read the interview at The Hub.