1) The document discusses 3 lessons from going virtual: engaging exercises, carefully designing networking opportunities, and meticulously onboarding class participants. 2) It provides examples of discovery experiments that can be used to gain customer insights, including customer interviews, discussion forums, card sorting exercises, and prototypes. 3) An exercise is presented to map out Google's search advertising business model using the Business Model Canvas template, highlighting key partners, activities, resources, costs, customer segments, value propositions, channels, and revenue streams.