Microsoft open sourced their fuzzing framework
https://www.microsoft.com/security/blog/2020/09/15/microsoft-onefuzz-framework-open-source-developer-tool-fix-bugs/
Not new but certain worth a read - how HTTPS works
https://howhttps.works/
Ming Chow - a buddy of mine and did a fantastic online course on packet analysis, that includes a nod to your humble author (around minute 58)
https://www.youtube.com/watch?v=Lj2DaFLRQVI&feature=youtu.be
Stay safe out there.