Blockchain getting started
Haseeb Qureshi has posted a great article on Medium, "The authoritative guide to blockchain development".
In the article, Haseeb gives a very detailed overview of the entry into the Blockchain development. The overview ranges from the theoretical basics to the first concrete implementations.
I have extracted the links from the article and provided them on Github. The link list is a good basis for a quick familiarization with the blockchain technology.