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.

06/14/2017 06/13/2017
Intro to Computer Systems

www.cs.cmu.edu June 2017

06/12/2017 06/10/2017 06/08/2017 06/07/2017 06/06/2017
introduction to tweakable ciphers

summerschool-croatia.cs.ru.nl June 2017

06/05/2017 06/01/2017 05/31/2017

Propose a link