Introductory Education: The best place to start is with the on-demand sessions from Alexa Live 2020. You may need to register (free) if you did not attend the event, then search the session catalog in the Multimodal Experience section of the Skill Development track for “Building Rich and Satisfying Alexa Games” or “I Want It All! Engage Customers with Skills that Combine Audio and Visuals.”
Slack Channel, Twitch Streams, Forums, and Email Support: We’re here to help, we want to hear from you, and contestants can engage with engineers, product teams, and evangelists! Plan to attend the weekly Evangelist Office Hours on the Twitch livestream where you can get help with all of your Alexa technical questions.
APL for Audio (beta)
Alexa Web API for Games
Motion and Sensing APIs