Man, this takes me back! I made a Minecraft clone called Mindacraft in Java using LWJGL (the same framework Minecraft uses) about 6 or 7 years ago using this tutorial. I vividly remember this tutorial being the most useful resource for OpenGL by an order of magnitude, and that was with it being written in a language that actually had pointers and buffers! (Using OpenGL in Java is very weird because you have to use pointers and buffers through a bunch of wrapper classes, and it makes things a lot weirder. It's like using unsafe in Rust if unsafe wasn't even in Rust).