Get the basics on touch sensors, geometry, viewpoints, animation, and material variants, variant sets, and switches.
For additional information on variant sets and switches, see the following: Variant Sets and Switches (Video) Part 3: Variant Sets and Interactions (Video) Switch Material (Video) Variants and Variant Sets (How-To) Working with Environments and Environment Switches (How-To) Variants (Reference) Switch (Reference) Module vrSwitch (Python)
For additional information on variant sets and switches, see the following: