Ableton Push: Sampling w/ Max For Live's PushMLR and 9.1+ Native Step Sequencer
Learn how to sample without even leaving Push. These two videos will explain all you need to know to do it. And don't forget if you want to know more about Push, check out my 30 Days of Ableton Push series.
I also just recently got a new Max for Live article published on Dubspot. There are some great utilities featured from Isotonic Studios, Subaqueous and PushMLR. Check it out, http://blog.dubspot.com/max-for-live-ableton-roundup-autotune-push-pack/