There are a lot of free Ableton Live and Max for Live Packs available at Ableton's website alone, and there are tons of premium packs to choose from. Most of them come with an included help lesson that is opened right after installing the pack. Often, we don't read, but close it right after a quick browsing. There is a quick way to access the lesson later, which I show you in this episode of the Ableton Live 9 Quick Tips.
Questions or suggestions? Let me know in the comments below.