Tutorials and useful content

Tutorials

OpenGL tutorials by TheCherno

Game engine tutorials by TheCherno

OpenGL Course by freeCodeCamp.org

Rendering fonts

GDC Talks

Nolla Games' Petri Purho talks about the technical details of Noita's physics engine

Math for Game Programmers: Fast and Funky 1D Nonlinear Transformations

Math for Game Programmers: Building a Better Jump

Math for Game Programmers: Noise-Based RNG

Explanations

Binary Serialization and Pixel Art in C and OpenGL | Game Engineering

Recreating Noita's Sand Simulation in C and OpenGL

Stealing Control from Players - Astortion Devlog

Potentially useful things

Strings optimization by TheCherno

Interesting / directly unrelated content

How to survive in the game dev industry for 9 years without taking a hit