Steve Krug's Don't make me think is one of the best resources on UI/UX https://sensible.com/dont-make-me-think/
I would put on the book recommendation list for a UI/UX Primer
Dan Boneh's "Cryptography I".
https://www.coursera.org/learn/crypto
Was one of the best basic lecture I have seen on the crypto topic.
I have enjoyed several lectures in my studies but some things I just understood after the good and interesting explanations in this course. Really amazing. Still waiting for the the Crypto 2 course.
If you understand german I recommend you math lessons by
Christian Spannagel https://www.youtube.com/@pharithmetik. Makes some less interesting topics enjoyable.
Also follow the BCP that will remain in a draft state forever(at least for the near future): https://datatracker.ietf.org/doc/html/draft-ietf-oauth-secur...