I am currently studying for an MSc which has a semester on Blockchain. You can see my current thoughts at https://shkspr.mobi/blog/tag/certified-blockchain-profession...
Highly recommend the MIT video course on blockchains: https://youtube.com/playlist?list=PLUl4u3cNGP63UUkfL0onkxF6M...
And for a deep dive into any specific project, it there's an episode of the Zero Knowledge podcast about a project it's worth listening to.