Does anyone have some good learning materials for someone who is very new to graphics programming, but needs to interact with OpenGL-Esque primitives (without anything like Glad/etc. in the mix)?

I dunno I feel like everytime I open up an example i get one of two things:

• it's like "yes to draw the triangle first you take your vertex shader, and pixel shader and your vertex attribute buffers which you should use an index offset so you don't have to call set attribute buffer everytime if nothing has changed", and I feel like I've skipped to drawing the rest of the owl real quick.
• It's like "here's this library that if you can use makes everything super easy just call DRAW_Circle and your circle is drawn congrats!" (which in this case I absolutely cannot use).

Is there a: "I want to learn to draw basic shapes without the libraries, and without immediately jumping into here's shaders and vertex buffers and good fucking luck"?