I am a software professional. Love sports!!
The current news space is full of view points on how the middle management is under the scare of massive layoffs and what should they be doing to come out of this.
Best way to learn a technology is to develop a small program that covers the key concepts and gives you the necessary confidence (and interest !!) to continue learning.
Block chain is a decentralized system. There are no central agencies to authorize the transactions. So who and how are the transactions authorized? What are the incentives for the authorization agency to do so?