Reply to Ableton essentials

After having it for a while but not really having the time to delve into it, I'm now about to immerse myself in the world of Ableton.

Just wondering, anyone got any essential Live Packs to add into it, any essentials tutorials, tips, shortcuts etc?

I'll be using it to probably make some promo mixes, remixes and create some of my own tunes. It'll be mostly in the area of electro house.