@Photics's physical A Book About Hype is probably the best resource for learning Hype in a context of how to eke out its power through JavaScript. But good luck convincing him to make an online addition 
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Otherwise, assuming you've worked through the other courses/resources on the tutorials page, I'd say that most general JavaScript courses will still serve you well. Hype's API for controlling documents/animations is fairly straight forward once developers have the scripting basics down, so the harder parts are usually knowing what is available to combine with from the HTML side. I'm not really sure of good online resources for that since I've "grown up" with the technology, so hopefully others who have more recently learned can chime in!