[Someone1611]

Linux (+phone) (In)securities & misinformation debunking, Android securities, Browser (in)securities, Browser tracking misinformations & debunking, Encrypted DNS, VPNs, advice
https://madaidans-insecurities.github.io/
Last updated: Mid 2022 but it is still current. So many link in their articles.
Kicksecure's documentation: From Essentials to Advanced security guide, and more
https://www.kicksecure.com/wiki/Documentation
Whonix's documentation: Stay anonymous
https://www.whonix.org/wiki/Documentation
(there forum also contain helpful discussions)
PrivSec.dev: A practical approach to Privacy and Security. It is good to read although it recommend some VPN service provider.
Linux, Android, Qubes OS, Knowledge base: Threat modelling, Multi-factor authentication
https://privsec.dev


Don't just "Linux is more secure than Windows". It is the opposite. Read them, don't ignore.
(admit that Windows is more secure but still use Linux because Windows is spying and closed source and it is bad for us, that doesn't conflict.)

Also: use suckless stuff instead is a good practice, suckless.org

(madaidan's insecurities was initially found on breachforums.bf, that leads me to other resources I shared above.)