I couldn't download the book.
Is it possible to give me the book(file) or a link to be downloaded (for free).
Actually I also missed the download and I bookmarked them and visit them regularly but they never put it on free .(Taking free from illegal source is copyright violation or theft)
But if you want to really want some understanding in block chain then start with this below free book.
https://public.dhe.ibm.com/common/ssi/ecm/xi/en/xim12354usen/XIM12354USEN.PDF
There are various universities and courses that you can find in below threads.
https://bitcointalksearch.org/topic/available-courses-on-bitcoin-and-blockchain-technology-from-colleges-and-univers-4686783
You can try this book for free from amazon with Kindle unlimited edition trial.
https://www.amazon.com/Blockchain-understanding-revolutional-technology-Cryptocurrency-ebook/dp/B0741MCYZS/ref=sr_1_1?s=digital-text&ie=UTF8&qid=1501372521&sr=1-1&keywords=blockchai&pldnSite=1
Register with IBM to get started in blockchain.
https://www.ibm.com/blockchain/getting-started