The content in your page looks very promising. I agree that this information is not easy to find on the net. You may get basic tutorials but nothing in-depth of production ready. I got a copy of your ebook Building a REST API with Spring 4. Does your video content cover exactly this content? Also are there any advantages of using Spring over Jersey for REST?
No - the eBook is a bit older and not nearly is as comprehensive. It's a solid start (pre-Boot) but it's not an education in the same way the course will be.
As for the platform you choose - there's no "right" answer. Spring is a solid, mature and well maintained platform, so it's a good choice. That doesn't make any other platform worst off.