The fraud will continue until we get more and more rules and regulation. I expect the governments will step in to regulate all of this. Once we have that we will have applications that work for the public .

But I think the real innovation will be in private blockchain systems . The Hyperledger group has some exciting technology . Taking business problems you know and seeing if it will work will be really exciting.

I recommend going through their free course https://courses.edx.org/courses/course-v1:LinuxFoundationX+L...

Even if you aren’t interested in private blockchain technology it gives you what you need to understand. From there you could just read the white papers of bitcoin and Ethereum .