We will be using Ableton Live 9 later in the semester and this link will provide a lot of valuable tutorials to help answer some of the questions you may have about using Live 9.
From the official site and has videos for these:
Setting up an audio interface
Setting up a MIDI controller
Recording audio
MIDI beats and melodies
Working with Session View
Session View to Arrangement View
Exporting audio
Optimizing your audio interface setup