Here is a list of links I stumbled into and found interesting. Usually related to Crypto/Security although it could be anything. You can also suggest me something.

09/06/2018
The Manga Guide to Cryptography

nostarch.com September 2018

An Intensive Introduction to Cryptography

www.intensecrypto.org September 2018

Cryptography by the Numbers

wordpress.rose-hulman.edu September 2018

09/03/2018
Feynman’s Breakthrough, Disregard Others!

stepsandleaps.wordpress.com September 2018

08/30/2018 08/29/2018 08/28/2018 08/17/2018 08/16/2018 08/15/2018
bitslicing, an introduction

timtaubert.de August 2018

08/14/2018
BearSSL: TLS 1.3 Status

www.bearssl.org August 2018

Propose a link