CppCon has super interesting content. That comes from a person who has written maybe two dozen lines of C++ code, mostly just hello world. E.g. this talk by Matt Godbolt or anything by Chadler Carruth.
Examples:
- Ben Deane - Using Types Effectively [0]
- Jason Turner - Rich Code for Tiny Computers: A Simple Commodore 64 Game in C++17 [1]
- Ben Deane & Jason Turner - constexpr ALL the Things! [2]
[0] https://www.youtube.com/watch?v=ojZbFIQSdl8