Here is the list of live stream videos that covers the foundations of Gig Performer.
1. Think Like A Gig Performer
2. Using Visual Elements
3. Widget Essentials
4. System Actions and Global Rackspace
5. MIDI In and MIDI Out Blocks
6. Building a keys rackspace for "Rosanna"
7. How to use the Setlist view
You may also want to check the Build it series here.